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cardem: Report the VCC voltage (if supported)

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The SIMtrace2 protocol alwasy contained a field for the VCC voltage,
the cardem firmware just never populated that field, even on those
boards that use the ADC to determine its voltage.

Change-Id: Idcecad553fb36380e916378e1420488acbbfa8e3
This commit is contained in:
Harald Welte
2022-01-26 10:48:51 +01:00
committed by laforge
parent 3a6f1adc2e
commit 20bc014b82
3 changed files with 21 additions and 1 deletions
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2
firmware/libcommon/include/card_emu.h
View File

@@ -69,6 +69,8 @@ void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx);
void card_emu_uart_wait_tx_idle(uint8_t uart_chan);
void card_emu_uart_interrupt(uint8_t uart_chan);
int card_emu_get_vcc(uint8_t uart_chan);
struct cardemu_usb_msg_config;
int card_emu_set_config(struct card_handle *ch, const struct cardemu_usb_msg_config *scfg,
unsigned int scfg_len);

10
firmware/libcommon/source/card_emu.c
View File

@@ -1058,7 +1058,10 @@ void card_emu_report_status(struct card_handle *ch, bool report_on_irq)
sts->flags |= CEMU_STATUS_F_CLK_ACTIVE;
if (ch->in_reset)
sts->flags |= CEMU_STATUS_F_RESET_ACTIVE;
/* FIXME: voltage + card insert */
#ifdef DETECT_VCC_BY_ADC
sts->voltage_mv = card_emu_get_vcc(ch->num);
#endif
/* FIXME: card insert */
sts->F_index = ch->F_index;
sts->D_index = ch->D_index;
sts->wi = ch->wi;
@@ -1102,7 +1105,12 @@ void card_emu_io_statechg(struct card_handle *ch, enum card_io io, int active)
card_set_state(ch, ISO_S_WAIT_POWER);
chg_mask |= CEMU_STATUS_F_VCC_PRESENT;
} else if (active == 1 && ch->vcc_active == 0) {
#ifdef DETECT_VCC_BY_ADC
TRACE_INFO("%u: VCC activated (%d mV)\r\n", ch->num,
card_emu_get_vcc(ch->num));
#else
TRACE_INFO("%u: VCC activated\r\n", ch->num);
#endif
card_set_state(ch, ISO_S_WAIT_CLK);
chg_mask |= CEMU_STATUS_F_VCC_PRESENT;
}

10
firmware/libcommon/source/mode_cardemu.c
View File

@@ -168,6 +168,16 @@ static void card_emu_uart_set_direction(uint8_t uart_chan, bool tx)
#endif
}
int card_emu_get_vcc(uint8_t uart_chan)
{
struct cardem_inst *ci = &cardem_inst[uart_chan];
#ifdef DETECT_VCC_BY_ADC
return ci->vcc_uv / 1000;
#else
return -1;
#endif
}
/* call-back from card_emu.c to enable/disable transmit and/or receive */
void card_emu_uart_enable(uint8_t uart_chan, uint8_t rxtx)
{