mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-03-16 21:28:33 +03:00
add new board and app for gpio testing on octsimtest board
Change-Id: I01243044002f51b34e8dc12c1b1f565bbf1740a2
This commit is contained in:
Joachim Steiger
@@ -24,6 +24,7 @@ Current boards supported are:
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* `simtrace`: The good old Osmocom SIMtrace PCB with SAM3 instead of SAM7, open hardware.
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* `simtrace`: The good old Osmocom SIMtrace PCB with SAM3 instead of SAM7, open hardware.
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* `qmod`: A sysmocom-proprietary quad mPCIe carrier board, publicly available
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* `qmod`: A sysmocom-proprietary quad mPCIe carrier board, publicly available
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* `owhw`: An undisclosed sysmocom-internal board, not publicly available
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* `owhw`: An undisclosed sysmocom-internal board, not publicly available
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* `octsimtest`: A sysmocom-proprietary production testing board, not publicly available
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= Firmware
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= Firmware
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@@ -51,6 +52,7 @@ Current applications supported are:
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* `cardem`: To provide remote SIM operation capabilities.
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* `cardem`: To provide remote SIM operation capabilities.
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* `trace`: To monitor the communication between a SIM card and a phone (corresponds to the functionality provide by the first SIMtrace)
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* `trace`: To monitor the communication between a SIM card and a phone (corresponds to the functionality provide by the first SIMtrace)
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* `triple_play`: To support the three previous functionalities, using USB configurations.
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* `triple_play`: To support the three previous functionalities, using USB configurations.
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* `gpio_test`: internal test code
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== Memories
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== Memories
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3
firmware/apps/gpio_test/Makefile
Normal file
3
firmware/apps/gpio_test/Makefile
Normal file
@@ -0,0 +1,3 @@
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C_FILES += $(C_LIBUSB_RT)
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C_FILES += gpio_test.c
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10
firmware/apps/gpio_test/gpio_test.c
Normal file
10
firmware/apps/gpio_test/gpio_test.c
Normal file
@@ -0,0 +1,10 @@
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#include <stdint.h>
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#include "utils.h"
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#include "chip.h"
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void gpio_test_init(void)
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{
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printf("FIXME run tests here\n\n");
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}
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54
firmware/apps/gpio_test/main.c
Normal file
54
firmware/apps/gpio_test/main.c
Normal file
@@ -0,0 +1,54 @@
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#include "board.h"
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#include "utils.h"
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#include "osmocom/core/timer.h"
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extern void gpio_test_init(void);
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/* returns '1' in case we should break any endless loop */
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static void check_exec_dbg_cmd(void)
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{
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int ch;
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if (!UART_IsRxReady())
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return;
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ch = UART_GetChar();
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board_exec_dbg_cmd(ch);
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}
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extern int main(void)
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{
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led_init();
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led_blink(LED_RED, BLINK_ALWAYS_ON);
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led_blink(LED_GREEN, BLINK_ALWAYS_ON);
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/* Enable watchdog for 2000 ms, with no window */
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WDT_Enable(WDT, WDT_MR_WDRSTEN | WDT_MR_WDDBGHLT | WDT_MR_WDIDLEHLT |
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(WDT_GetPeriod(2000) << 16) | WDT_GetPeriod(2000));
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PIO_InitializeInterrupts(0);
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printf("\n\r\n\r"
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"=============================================================================\n\r"
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"GPIO Test firmware " GIT_VERSION " (C) 2019 Sysmocom GmbH\n\r"
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"=============================================================================\n\r");
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board_main_top();
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TRACE_INFO("starting gpio test...\n\r");
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gpio_test_init();
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TRACE_INFO("entering main loop...\n\r");
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while (1) {
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WDT_Restart(WDT);
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check_exec_dbg_cmd();
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osmo_timers_prepare();
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osmo_timers_update();
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}
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}
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10
firmware/apps/gpio_test/usb_strings.txt
Normal file
10
firmware/apps/gpio_test/usb_strings.txt
Normal file
@@ -0,0 +1,10 @@
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sysmocom - s.f.m.c. GmbH
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SIMtrace 2 compatible device
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SIMtrace Sniffer
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SIMtrace CCID
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SIMtrace Phone
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SIMtrace MITM
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CardEmulator Modem 1
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CardEmulator Modem 2
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CardEmulator Modem 3
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CardEmulator Modem 4
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154
firmware/libboard/octsimtest/include/board.h
Normal file
154
firmware/libboard/octsimtest/include/board.h
Normal file
@@ -0,0 +1,154 @@
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/* octSIMtest with SAM3S board definition
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*
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* (C) 2019 by sysmocom -s.f.m.c. GmbH, Author:Joachim Steiger <jsteiger@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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||||||
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
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*/
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#pragma once
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#include "board_common.h"
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#include "simtrace_usb.h"
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/* Name of the board */
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#define BOARD_NAME "OCTSIMTEST"
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/* Board definition */
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#define octsimtest
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/** oscillator used as main clock source (in Hz) */
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#define BOARD_MAINOSC 18432000
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/** desired main clock frequency (in Hz, based on BOARD_MAINOSC) */
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#define BOARD_MCK 58982400 // 18.432 * 16 / 5
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/** Pin configuration **/
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/* Button to force bootloader start (shorted to ground when pressed */
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#define PIN_BOOTLOADER_SW {PIO_PA5, PIOA, ID_PIOA, PIO_INPUT, PIO_PULLUP}
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//FIXME SIM_PWEN_PIN collides with PA5/bootloader_sw on octsimtest
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/* Enable powering the card using the second 3.3 V output of the LDO (active high) */
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#define SIM_PWEN_PIN {PIO_PA12, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_DEFAULT}
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/* Enable powering the SIM card */
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#define PWR_PINS SIM_PWEN_PIN
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// FIXME PA8 is 32khz xtal on octsimtest
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/* Card presence pin */
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#define SW_SIM PIO_PA11
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/* Pull card presence pin high (shorted to ground in card slot when card is present) */
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#define SMARTCARD_CONNECT_PIN {SW_SIM, PIOA, ID_PIOA, PIO_INPUT, PIO_PULLUP | PIO_DEBOUNCE | PIO_DEGLITCH | PIO_IT_EDGE }
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/** Smart card connection **/
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//FIXME
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/* Card RST reset signal input (active low; RST_SIM in schematic) */
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#define PIN_SIM_RST {PIO_PA13, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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/* Card I/O data signal input/output (I/O_SIM in schematic) */
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#define PIN_SIM_IO {PIO_PA6A_TXD0, PIOA, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT}
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/* Card CLK clock input (CLK_SIM in schematic) */
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#define PIN_SIM_CLK {PIO_PA2B_SCK0, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
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/* Pin to measure card I/O timing (to start measuring the ETU on I/O activity; connected I/O_SIM in schematic) */
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#define PIN_SIM_IO_INPUT {PIO_PA1B_TIOB0, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
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//FIXME PIO_PA4B_TCLK0 PA4 is LED on octsimtest
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/* Pin used as clock input (to measure the ETU duration; connected to CLK_SIM in schematic) */
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#define PIN_SIM_CLK_INPUT {PIO_PA14, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
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/* Pins used to measure ETU timing (using timer counter) */
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#define PINS_TC PIN_SIM_IO_INPUT, PIN_SIM_CLK_INPUT
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/** Phone connection **/
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/* Phone USIM slot 1 VCC pin (VCC_PHONE in schematic) */
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#define PIN_USIM1_VCC {PIO_PA25, PIOA, ID_PIOA, PIO_INPUT, PIO_DEFAULT}
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/* Phone USIM slot 1 RST pin (active low; RST_PHONE in schematic) */
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#define PIN_USIM1_nRST {PIO_PA24, PIOA, ID_PIOA, PIO_INPUT, PIO_IT_RISE_EDGE | PIO_DEGLITCH }
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/* Phone I/O data signal input/output (I/O_PHONE in schematic) */
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#define PIN_PHONE_IO {PIO_PA22A_TXD1, PIOA, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT}
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/* Phone CLK clock input (CLK_PHONE in schematic) */
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#define PIN_PHONE_CLK {PIO_PA23A_SCK1, PIOA, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT}
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/* Pin used for phone USIM slot 1 communication */
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#define PINS_USIM1 PIN_PHONE_IO, PIN_PHONE_CLK, PIN_PHONE_CLK_INPUT, PIN_USIM1_VCC, PIN_PHONE_IO_INPUT, PIN_USIM1_nRST
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/* Phone I/O data signal input/output (unused USART RX input; connected to I/O_PHONE in schematic) */
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#define PIN_PHONE_IO_INPUT {PIO_PA21A_RXD1, PIOA, ID_PIOA, PIO_PERIPH_A, PIO_DEFAULT}
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/* Pin used as clock input (to measure the ETU duration; connected to CLK_PHONE in schematic) */
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#define PIN_PHONE_CLK_INPUT {PIO_PA29B_TCLK2, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
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/** Default pin configuration **/
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/* Disconnect VPP, CLK, and RST lines between card and phone using bus switch (high sets bus switch to high-impedance) */
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#define PIN_SC_SW_DEFAULT {PIO_PA20, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_DEFAULT}
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/* Disconnect I/O line between card and phone using bus switch (high sets bus switch to high-impedance) */
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#define PIN_IO_SW_DEFAULT {PIO_PA19, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_DEFAULT}
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/* Disconnect all lines (VPP, CLK, RST, and I/O) between card and phone */
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#define PINS_BUS_DEFAULT PIN_SC_SW_DEFAULT, PIN_IO_SW_DEFAULT
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/** Sniffer configuration **/
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/* Connect VPP, CLK, and RST lines between card and phone using bus switch (low connects signals on bus switch) */
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#define PIN_SC_SW_SNIFF {PIO_PA20, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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/* Connect I/O line between card and phone using bus switch (low connects signals on bus switch) */
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#define PIN_IO_SW_SNIFF {PIO_PA19, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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/* Connect all lines (VPP, CLK, RST, and I/O) between card and phone */
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#define PINS_BUS_SNIFF PIN_SC_SW_SNIFF, PIN_IO_SW_SNIFF
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/* Card RST reset signal input (use as input since the phone will drive it) */
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#define PIN_SIM_RST_SNIFF {PIO_PA7, PIOA, ID_PIOA, PIO_INPUT, PIO_DEGLITCH | PIO_IT_EDGE}
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/* Pins used to sniff phone-card communication */
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#define PINS_SIM_SNIFF PIN_SIM_IO, PIN_SIM_CLK, PIN_SIM_RST_SNIFF
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/* Disable power converter 4.5-6V to 3.3V (active high) */
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#define PIN_SIM_PWEN_SNIFF {SIM_PWEN, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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/* Enable power switch to forward VCC_PHONE to VCC_SIM (active high) */
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#define PIN_VCC_FWD_SNIFF {VCC_FWD, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_DEFAULT}
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/* Use phone VCC to power card */
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#define PINS_PWR_SNIFF PIN_SIM_PWEN_SNIFF, PIN_VCC_FWD_SNIFF
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/** CCID configuration */
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/* Card RST reset signal input (active low; RST_SIM in schematic) */
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#define PIN_ISO7816_RSTMC {PIO_PA7, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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/* ISO7816-communication related pins */
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#define PINS_ISO7816 PIN_SIM_IO, PIN_SIM_CLK, PIN_ISO7816_RSTMC // SIM_PWEN_PIN, PIN_SIM_IO2, PIN_SIM_CLK2
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/** External SPI flash interface **/
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/* SPI MISO pin definition */
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#define PIN_SPI_MISO {PIO_PA12A_MISO, PIOA, PIOA, PIO_PERIPH_A, PIO_PULLUP}
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/* SPI MOSI pin definition */
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#define PIN_SPI_MOSI {PIO_PA13A_MOSI, PIOA, PIOA, PIO_PERIPH_A, PIO_DEFAULT}
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/* SPI SCK pin definition */
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#define PIN_SPI_SCK {PIO_PA14A_SPCK, PIOA, PIOA, PIO_PERIPH_A, PIO_DEFAULT}
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/* SPI pins definition. Contains MISO, MOSI & SCK */
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#define PINS_SPI PIN_SPI_MISO, PIN_SPI_MOSI, PIN_SPI_SCK
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/* SPI chip select 0 pin definition */
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#define PIN_SPI_NPCS0 {PIO_PA11A_NPCS0, PIOA, PIOA, PIO_PERIPH_A, PIO_DEFAULT}
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/* SPI flash write protect pin (active low, pulled low) */
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#define PIN_SPI_WP {PA15, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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/** Pin configuration to control USB pull-up on D+
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* @details the USB pull-up on D+ is enable by default on the board but can be disabled by setting PA16 high
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*/
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#define PIN_USB_PULLUP {PIO_PA16, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
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/** USB definitions */
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/* OpenMoko SIMtrace 2 USB vendor ID */
|
||||||
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#define BOARD_USB_VENDOR_ID USB_VENDOR_OPENMOKO
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||||||
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/* OpenMoko SIMtrace 2 USB product ID (main application/runtime mode) */
|
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#define BOARD_USB_PRODUCT_ID USB_PRODUCT_SIMTRACE2
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/* OpenMoko SIMtrace 2 DFU USB product ID (DFU bootloader/DFU mode) */
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#define BOARD_DFU_USB_PRODUCT_ID USB_PRODUCT_SIMTRACE2_DFU
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/* USB release number (bcdDevice, shown as 0.00) */
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#define BOARD_USB_RELEASE 0x000
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/* Indicate SIMtrace is bus power in USB attributes */
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||||||
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#define BOARD_USB_BMATTRIBUTES USBConfigurationDescriptor_BUSPOWERED_NORWAKEUP
|
||||||
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||||||
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/** Supported modes */
|
||||||
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/* SIMtrace board supports sniffer mode */
|
||||||
|
//#define HAVE_SNIFFER
|
||||||
|
/* SIMtrace board supports CCID mode */
|
||||||
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//#define HAVE_CCID
|
||||||
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/* SIMtrace board supports card emulation mode */
|
||||||
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//#define HAVE_CARDEM
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||||||
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/* SIMtrace board supports man-in-the-middle mode */
|
||||||
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//#define HAVE_MITM
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/* octsimtest board supports gpio_test mode */
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#define HAVE_GPIO_TEST
|
||||||
28
firmware/libboard/octsimtest/include/i2c.h
Normal file
28
firmware/libboard/octsimtest/include/i2c.h
Normal file
@@ -0,0 +1,28 @@
|
|||||||
|
/* I2C EEPROM memory read and write utilities
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation; either version 2 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
|
||||||
|
*/
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <stdbool.h>
|
||||||
|
|
||||||
|
void i2c_pin_init(void);
|
||||||
|
|
||||||
|
bool i2c_write_byte(bool send_start, bool send_stop, uint8_t byte);
|
||||||
|
uint8_t i2c_read_byte(bool nack, bool send_stop);
|
||||||
|
static void i2c_stop_cond(void);
|
||||||
|
|
||||||
|
int eeprom_write_byte(uint8_t slave, uint8_t addr, uint8_t byte);
|
||||||
|
int eeprom_read_byte(uint8_t slave, uint8_t addr);
|
||||||
23
firmware/libboard/octsimtest/include/mcp23017.h
Normal file
23
firmware/libboard/octsimtest/include/mcp23017.h
Normal file
@@ -0,0 +1,23 @@
|
|||||||
|
/* mcp23017 i2c gpio expander read and write utilities
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation; either version 2 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
|
||||||
|
*/
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#define MCP23017_ADDRESS 0x20
|
||||||
|
|
||||||
|
int mcp23017_init(uint8_t slave);
|
||||||
|
//int mcp23017_write_byte(uint8_t slave, uint8_t addr, uint8_t byte);
|
||||||
|
//int mcp23017_read_byte(uint8_t slave, uint8_t addr);
|
||||||
72
firmware/libboard/octsimtest/source/board_octsimtest.c
Normal file
72
firmware/libboard/octsimtest/source/board_octsimtest.c
Normal file
@@ -0,0 +1,72 @@
|
|||||||
|
/* SIMtrace with SAM3S specific application code
|
||||||
|
*
|
||||||
|
* (C) 2017 by Harald Welte <laforge@gnumonks.org>
|
||||||
|
* (C) 2018 by sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de>
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation; either version 2 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
|
||||||
|
*/
|
||||||
|
#include "board.h"
|
||||||
|
#include "simtrace.h"
|
||||||
|
#include "utils.h"
|
||||||
|
#include "sim_switch.h"
|
||||||
|
#include <osmocom/core/timer.h>
|
||||||
|
#include "usb_buf.h"
|
||||||
|
#include "i2c.h"
|
||||||
|
#include "mcp23017.h"
|
||||||
|
|
||||||
|
void board_exec_dbg_cmd(int ch)
|
||||||
|
{
|
||||||
|
switch (ch) {
|
||||||
|
case '?':
|
||||||
|
printf("\t?\thelp\n\r");
|
||||||
|
printf("\tR\treset SAM3\n\r");
|
||||||
|
break;
|
||||||
|
case 'R':
|
||||||
|
printf("Asking NVIC to reset us\n\r");
|
||||||
|
USBD_Disconnect();
|
||||||
|
NVIC_SystemReset();
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
printf("Unknown command '%c'\n\r", ch);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void board_main_top(void)
|
||||||
|
{
|
||||||
|
#ifndef APPLICATION_dfu
|
||||||
|
usb_buf_init();
|
||||||
|
|
||||||
|
i2c_pin_init();
|
||||||
|
mcp23017_init(MCP23017_ADDRESS);
|
||||||
|
/* Initialize checking for card insert/remove events */
|
||||||
|
//card_present_init();
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
int board_override_enter_dfu(void)
|
||||||
|
{
|
||||||
|
const Pin bl_sw_pin = PIN_BOOTLOADER_SW;
|
||||||
|
|
||||||
|
PIO_Configure(&bl_sw_pin, 1);
|
||||||
|
|
||||||
|
/* Enter DFU bootloader in case the respective button is pressed */
|
||||||
|
if (PIO_Get(&bl_sw_pin) == 0) {
|
||||||
|
/* do not print to early since the console is not initialized yet */
|
||||||
|
//printf("BOOTLOADER switch pressed -> Force DFU\n\r");
|
||||||
|
return 1;
|
||||||
|
} else
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
225
firmware/libboard/octsimtest/source/i2c.c
Normal file
225
firmware/libboard/octsimtest/source/i2c.c
Normal file
@@ -0,0 +1,225 @@
|
|||||||
|
/* I2C EEPROM memory read and write utilities
|
||||||
|
*
|
||||||
|
* This program is free software; you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation; either version 2 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
|
||||||
|
*/
|
||||||
|
#include "board.h"
|
||||||
|
#include <stdbool.h>
|
||||||
|
|
||||||
|
/* Low-Level I2C Routines */
|
||||||
|
|
||||||
|
static const Pin pin_sda = {PIO_PA30, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_OPENDRAIN };
|
||||||
|
static const Pin pin_sda_in = {PIO_PA30, PIOA, ID_PIOA, PIO_INPUT, PIO_DEFAULT };
|
||||||
|
static const Pin pin_scl = {PIO_PA31, PIOA, ID_PIOA, PIO_OUTPUT_1, PIO_OPENDRAIN };
|
||||||
|
|
||||||
|
static void i2c_delay()
|
||||||
|
{
|
||||||
|
volatile int v;
|
||||||
|
int i;
|
||||||
|
|
||||||
|
/* 100 cycles results in SCL peak length of 44us, so it's about
|
||||||
|
* 440ns per cycle here */
|
||||||
|
for (i = 0; i < 14; i++) {
|
||||||
|
v = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void i2c_pin_init(void)
|
||||||
|
{
|
||||||
|
PIO_Configure(&pin_scl, PIO_LISTSIZE(pin_scl));
|
||||||
|
PIO_Configure(&pin_sda, PIO_LISTSIZE(pin_sda));
|
||||||
|
}
|
||||||
|
|
||||||
|
static void set_scl(void)
|
||||||
|
{
|
||||||
|
PIO_Set(&pin_scl);
|
||||||
|
i2c_delay();
|
||||||
|
}
|
||||||
|
|
||||||
|
static void set_sda(void)
|
||||||
|
{
|
||||||
|
PIO_Set(&pin_sda);
|
||||||
|
i2c_delay();
|
||||||
|
}
|
||||||
|
|
||||||
|
static void clear_scl(void)
|
||||||
|
{
|
||||||
|
PIO_Clear(&pin_scl);
|
||||||
|
i2c_delay();
|
||||||
|
}
|
||||||
|
|
||||||
|
static void clear_sda(void)
|
||||||
|
{
|
||||||
|
PIO_Clear(&pin_sda);
|
||||||
|
i2c_delay();
|
||||||
|
}
|
||||||
|
|
||||||
|
static bool read_sda(void)
|
||||||
|
{
|
||||||
|
bool ret;
|
||||||
|
|
||||||
|
PIO_Configure(&pin_sda_in, PIO_LISTSIZE(pin_sda_in));
|
||||||
|
if (PIO_Get(&pin_sda_in))
|
||||||
|
ret = true;
|
||||||
|
else
|
||||||
|
ret = false;
|
||||||
|
PIO_Configure(&pin_sda, PIO_LISTSIZE(pin_sda));
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Core I2C Routines */
|
||||||
|
|
||||||
|
static bool i2c_started = false;
|
||||||
|
|
||||||
|
static void i2c_start_cond(void)
|
||||||
|
{
|
||||||
|
if (i2c_started) {
|
||||||
|
set_sda();
|
||||||
|
set_scl();
|
||||||
|
}
|
||||||
|
|
||||||
|
clear_sda();
|
||||||
|
i2c_delay();
|
||||||
|
clear_scl();
|
||||||
|
i2c_started = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void i2c_stop_cond(void)
|
||||||
|
{
|
||||||
|
clear_sda();
|
||||||
|
set_scl();
|
||||||
|
set_sda();
|
||||||
|
i2c_delay();
|
||||||
|
i2c_started = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void i2c_write_bit(bool bit)
|
||||||
|
{
|
||||||
|
if (bit)
|
||||||
|
set_sda();
|
||||||
|
else
|
||||||
|
clear_sda();
|
||||||
|
i2c_delay(); // ?
|
||||||
|
set_scl();
|
||||||
|
clear_scl();
|
||||||
|
}
|
||||||
|
|
||||||
|
static bool i2c_read_bit(void)
|
||||||
|
{
|
||||||
|
bool bit;
|
||||||
|
|
||||||
|
set_sda();
|
||||||
|
set_scl();
|
||||||
|
bit = read_sda();
|
||||||
|
clear_scl();
|
||||||
|
|
||||||
|
return bit;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool i2c_write_byte(bool send_start, bool send_stop, uint8_t byte)
|
||||||
|
{
|
||||||
|
uint8_t bit;
|
||||||
|
bool nack;
|
||||||
|
|
||||||
|
if (send_start)
|
||||||
|
i2c_start_cond();
|
||||||
|
|
||||||
|
for (bit = 0; bit < 8; bit++) {
|
||||||
|
i2c_write_bit((byte & 0x80) != 0);
|
||||||
|
byte <<= 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
nack = i2c_read_bit();
|
||||||
|
|
||||||
|
if (send_stop)
|
||||||
|
i2c_stop_cond();
|
||||||
|
|
||||||
|
return nack;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t i2c_read_byte(bool nack, bool send_stop)
|
||||||
|
{
|
||||||
|
uint8_t byte = 0;
|
||||||
|
uint8_t bit;
|
||||||
|
|
||||||
|
for (bit = 0; bit < 8; bit++) {
|
||||||
|
byte = (byte << 1) | i2c_read_bit();
|
||||||
|
}
|
||||||
|
|
||||||
|
i2c_write_bit(nack);
|
||||||
|
|
||||||
|
if (send_stop)
|
||||||
|
i2c_stop_cond();
|
||||||
|
|
||||||
|
return byte;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* EEPROM related code */
|
||||||
|
|
||||||
|
int eeprom_write_byte(uint8_t slave, uint8_t addr, uint8_t byte)
|
||||||
|
{
|
||||||
|
bool nack;
|
||||||
|
|
||||||
|
WDT_Restart(WDT);
|
||||||
|
|
||||||
|
/* Write slave address */
|
||||||
|
nack = i2c_write_byte(true, false, slave << 1);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
nack = i2c_write_byte(false, false, addr);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
nack = i2c_write_byte(false, true, byte);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
/* Wait tWR time to ensure EEPROM is writing correctly (tWR = 5 ms for AT24C02) */
|
||||||
|
mdelay(5);
|
||||||
|
|
||||||
|
out_stop:
|
||||||
|
i2c_stop_cond();
|
||||||
|
if (nack)
|
||||||
|
return -1;
|
||||||
|
else
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int eeprom_read_byte(uint8_t slave, uint8_t addr)
|
||||||
|
{
|
||||||
|
bool nack;
|
||||||
|
|
||||||
|
WDT_Restart(WDT);
|
||||||
|
|
||||||
|
/* dummy write cycle */
|
||||||
|
nack = i2c_write_byte(true, false, slave << 1);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
nack = i2c_write_byte(false, false, addr);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
/* Re-start with read */
|
||||||
|
nack = i2c_write_byte(true, false, (slave << 1) | 1);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
|
||||||
|
return i2c_read_byte(true, true);
|
||||||
|
|
||||||
|
out_stop:
|
||||||
|
i2c_stop_cond();
|
||||||
|
if (nack)
|
||||||
|
return -1;
|
||||||
|
else
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
106
firmware/libboard/octsimtest/source/mcp23017.c
Normal file
106
firmware/libboard/octsimtest/source/mcp23017.c
Normal file
@@ -0,0 +1,106 @@
|
|||||||
|
#include "board.h"
|
||||||
|
#include <stdbool.h>
|
||||||
|
#include "i2c.h"
|
||||||
|
#include "mcp23017.h"
|
||||||
|
|
||||||
|
|
||||||
|
//defines from https://github.com/adafruit/Adafruit-MCP23017-Arduino-Library/blob/master/Adafruit_MCP23017.h under BSD license
|
||||||
|
|
||||||
|
// registers
|
||||||
|
#define MCP23017_IODIRA 0x00
|
||||||
|
#define MCP23017_IPOLA 0x02
|
||||||
|
#define MCP23017_GPINTENA 0x04
|
||||||
|
#define MCP23017_DEFVALA 0x06
|
||||||
|
#define MCP23017_INTCONA 0x08
|
||||||
|
#define MCP23017_IOCONA 0x0A
|
||||||
|
#define MCP23017_GPPUA 0x0C
|
||||||
|
#define MCP23017_INTFA 0x0E
|
||||||
|
#define MCP23017_INTCAPA 0x10
|
||||||
|
#define MCP23017_GPIOA 0x12
|
||||||
|
#define MCP23017_OLATA 0x14
|
||||||
|
|
||||||
|
|
||||||
|
#define MCP23017_IODIRB 0x01
|
||||||
|
#define MCP23017_IPOLB 0x03
|
||||||
|
#define MCP23017_GPINTENB 0x05
|
||||||
|
#define MCP23017_DEFVALB 0x07
|
||||||
|
#define MCP23017_INTCONB 0x09
|
||||||
|
#define MCP23017_IOCONB 0x0B
|
||||||
|
#define MCP23017_GPPUB 0x0D
|
||||||
|
#define MCP23017_INTFB 0x0F
|
||||||
|
#define MCP23017_INTCAPB 0x11
|
||||||
|
#define MCP23017_GPIOB 0x13
|
||||||
|
#define MCP23017_OLATB 0x15
|
||||||
|
|
||||||
|
#define MCP23017_INT_ERR 255
|
||||||
|
|
||||||
|
|
||||||
|
//bool i2c_write_byte(bool send_start, bool send_stop, uint8_t byte)
|
||||||
|
//uint8_t i2c_read_byte(bool nack, bool send_stop)
|
||||||
|
//static void i2c_stop_cond(void)
|
||||||
|
|
||||||
|
int mcp23017_write_byte(uint8_t slave, uint8_t addr, uint8_t byte)
|
||||||
|
{
|
||||||
|
bool nack;
|
||||||
|
|
||||||
|
WDT_Restart(WDT);
|
||||||
|
|
||||||
|
// Write slave address
|
||||||
|
nack = i2c_write_byte(true, false, slave << 1);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
nack = i2c_write_byte(false, false, addr);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
nack = i2c_write_byte(false, true, byte);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
|
||||||
|
out_stop:
|
||||||
|
i2c_stop_cond();
|
||||||
|
if (nack)
|
||||||
|
return -1;
|
||||||
|
else
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int mcp23017_read_byte(uint8_t slave, uint8_t addr)
|
||||||
|
{
|
||||||
|
bool nack;
|
||||||
|
|
||||||
|
WDT_Restart(WDT);
|
||||||
|
|
||||||
|
// dummy write cycle
|
||||||
|
nack = i2c_write_byte(true, false, slave << 1);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
nack = i2c_write_byte(false, false, addr);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
// Re-start with read
|
||||||
|
nack = i2c_write_byte(true, false, (slave << 1) | 1);
|
||||||
|
if (nack)
|
||||||
|
goto out_stop;
|
||||||
|
|
||||||
|
return i2c_read_byte(true, true);
|
||||||
|
|
||||||
|
out_stop:
|
||||||
|
i2c_stop_cond();
|
||||||
|
if (nack)
|
||||||
|
return -1;
|
||||||
|
else
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int mcp23017_init(uint8_t slave)
|
||||||
|
{
|
||||||
|
printf("mcp23017_init\n");
|
||||||
|
// all gpio input
|
||||||
|
if (mcp23017_write_byte(slave, MCP23017_IODIRA, 0xff))
|
||||||
|
return false;
|
||||||
|
if (mcp23017_write_byte(slave, MCP23017_IODIRB, 0xff))
|
||||||
|
return false;
|
||||||
|
printf("mcp23017 found\n");
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
Reference in New Issue
Block a user