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DFU: Move "Override DFU" (force DFU) code to board-specific section

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Each board can define its own conditions on which the controller should
boot into DFU mode rather than normal application mode.  Let's move the
"UART loopback jumper" to QMOD specific part.  For SIMtrace we have an
actual button and can use that in a future patch.
This commit is contained in:
Harald Welte
2017-11-28 22:15:56 +01:00
parent 7b250bfc8d
commit 27f5fc681c
3 changed files with 41 additions and 25 deletions
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29
firmware/apps/dfu/main.c
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@@ -105,31 +105,10 @@ int USBDFU_handle_upload(uint8_t altif, unsigned int offset,
return req_len;
}
static int uart_has_loopback_jumper(void)
/* can be overridden by board specific code, e.g. by pushbutton */
WEAK int board_override_enter_dfu(void)
{
unsigned int i;
const Pin uart_loopback_pins[] = {
{PIO_PA9A_URXD0, PIOA, ID_PIOA, PIO_INPUT, PIO_DEFAULT},
{PIO_PA10A_UTXD0, PIOA, ID_PIOA, PIO_OUTPUT_0, PIO_DEFAULT}
};
/* Configure UART pins as I/O */
PIO_Configure(uart_loopback_pins, PIO_LISTSIZE(uart_loopback_pins));
for (i = 0; i < 10; i++) {
/* Set TxD high; abort if RxD doesn't go high either */
PIO_Set(&uart_loopback_pins[1]);
if (!PIO_Get(&uart_loopback_pins[0]))
return 0;
/* Set TxD low, abort if RxD doesn't go low either */
PIO_Clear(&uart_loopback_pins[1]);
if (PIO_Get(&uart_loopback_pins[0]))
return 0;
}
/* if we reached here, RxD always follows TxD and thus a
* loopback jumper has been placed on RxD/TxD, and we will boot
* into DFU unconditionally */
return 1;
return 0;
}
/* using this function we can determine if we should enter DFU mode
@@ -139,7 +118,7 @@ int USBDFU_OverrideEnterDFU(void)
uint32_t *app_part = (uint32_t *)FLASH_ADDR(0);
/* If the loopback jumper is set, we enter DFU mode */
if (uart_has_loopback_jumper())
if (board_override_enter_dfu())
return 1;
/* if the first word of the application partition doesn't look