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application: add reset action

This commit is contained in:
King Kévin 2021-03-22 13:13:28 +01:00
parent a2152c620e
commit f9b7be3599
1 changed files with 69 additions and 2 deletions
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71
application.c
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@ -54,6 +54,7 @@ static uint32_t boot_time = 0;
#define TARGET_CHANNEL 1 /**< PA1/ADC1_IN1 used to measure target voltage */
const uint8_t adc_channels[] = {ADC_CHANNEL17, ADC_CHANNEL(TARGET_CHANNEL)}; /**< voltages to convert (channel 17 = internal voltage reference) */
#define TARGET_EN PA5 /**< pin to provide target voltage to LV side of voltage shifter (pulling them high through 10 kO) */
#define TARGET_RST PA6 /**< pin to reset target */
#define TARGET_5V PA7 /**< pin to provide 5 V on target voltage (controlling gate of pMOS, externally pulled up) */
#define TARGET_3V PB0 /**< pin to provide 3.3 V on target voltage (controlling gate of pMOS, externally pulled up) */
@ -225,6 +226,60 @@ static void command_target_voltage(void* argument)
putc('\n');
}
/** configure or reset target
* @param[in] argument 1 to assert reset, 0 to release reset, ODL to set reset pin to open-drain active low, ODH to set reset pin to open-drain active high, PPL to set reset pin to push-pull active low, PPH to set reset pin to push-pull active high
*/
static void command_target_reset(void* argument)
{
(void)argument; // we won't use the argument
static bool active_low = true; // if the reset is active low or high
// set reset mode
if (argument) { // if argument is provided
if (0 == strcmp("0", argument)) { // release reset
if (active_low) {
gpio_set(GPIO_PORT(TARGET_RST), GPIO_PIN(TARGET_RST));
} else {
gpio_clear(GPIO_PORT(TARGET_RST), GPIO_PIN(TARGET_RST));
}
} else if (0 == strcmp("1", argument)) { // assert reset
if (active_low) {
gpio_clear(GPIO_PORT(TARGET_RST), GPIO_PIN(TARGET_RST));
} else {
gpio_set(GPIO_PORT(TARGET_RST), GPIO_PIN(TARGET_RST));
}
} else if (0 == strcmp("ODL", argument)) { // set reset to open-drain active low
active_low = true; // remember we are active low
gpio_set_output_options(GPIO_PORT(TARGET_RST), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_RST)); // set output as open-drain
} else if (0 == strcmp("ODH", argument)) { // set reset to open-drain active hig
active_low = false; // remember we are active high
gpio_set_output_options(GPIO_PORT(TARGET_RST), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_RST)); // set output as open-drain
} else if (0 == strcmp("PPL", argument)) { // set reset to push-pull active low
active_low = true; // remember we are active low
gpio_set_output_options(GPIO_PORT(TARGET_RST), GPIO_OTYPE_PP, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_RST)); // set output as push-pull
} else if (0 == strcmp("PPH", argument)) { // set reset to push-pull active high
active_low = false; // remember we are active high
gpio_set_output_options(GPIO_PORT(TARGET_RST), GPIO_OTYPE_PP, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_RST)); // set output as push-pull
}
}
const bool open_drain = (GPIO_OTYPER(GPIO_PORT(TARGET_RST)) & GPIO_PIN(TARGET_RST)); // if the output is configured as open drain (else it's push-pull)
printf("reset pin set to %s active %s\n", open_drain ? "open-drain" : "push-pull", active_low ? "low" : "high");
if (gpio_get(GPIO_PORT(TARGET_RST), GPIO_PIN(TARGET_RST))) {
if (active_low) {
puts("reset released\n");
} else {
puts("reset asserted\n");
}
} else {
if (active_low) {
puts("reset asserted\n");
} else {
puts("reset released\n");
}
}
}
/** scan for SWD interface on channels
* @param[in] argument not used
*/
@ -679,8 +734,8 @@ static const struct menu_command_t menu_commands[] = {
.command_handler = &command_uptime,
},
{
.shortcut = 'r',
.name = "reset",
.shortcut = 'R',
.name = "board_reset",
.command_description = "reset board",
.argument = MENU_ARGUMENT_NONE,
.argument_description = NULL,
@ -726,6 +781,14 @@ static const struct menu_command_t menu_commands[] = {
.argument_description = "[0|3|5]",
.command_handler = &command_target_voltage,
},
{
.shortcut = 'r',
.name = "reset",
.command_description = "configure/reset target board",
.argument = MENU_ARGUMENT_STRING,
.argument_description = "[0|1|ODL|ODH|PPL|PPH]",
.command_handler = &command_target_reset,
},
{
.shortcut = 'c',
.name = "start",
@ -888,6 +951,10 @@ void main(void)
gpio_set(GPIO_PORT(TARGET_5V), GPIO_PIN(TARGET_5V)); // ensure we do not enable pMOS to provide voltage
gpio_set_output_options(GPIO_PORT(TARGET_5V), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_5V)); // set output as open-drain
gpio_mode_setup(GPIO_PORT(TARGET_5V), GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN(TARGET_5V)); // configure pin as output
rcc_periph_clock_enable(GPIO_RCC(TARGET_RST)); // enable clock for port domain
gpio_set(GPIO_PORT(TARGET_RST), GPIO_PIN(TARGET_RST)); // ensure reset is not pulled low
gpio_set_output_options(GPIO_PORT(TARGET_RST), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_RST)); // set output as open-drain
gpio_mode_setup(GPIO_PORT(TARGET_RST), GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN(TARGET_RST)); // configure pin as output
puts("OK\n");
puts("setup signal pins: ");