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application: allow setting target voltage

This commit is contained in:
King Kévin 2021-03-22 12:38:19 +01:00
parent 72fce44cf4
commit 5f87fc3670
1 changed files with 48 additions and 7 deletions
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55
application.c
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@ -54,6 +54,8 @@ 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_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) */
#define CHANNEL_NUMBERS 16 /**< number of target signals */
static const uint32_t channel_ports[] = {GPIO_PORT(PB12), GPIO_PORT(PB13), GPIO_PORT(PB14), GPIO_PORT(PB15), GPIO_PORT(PA8), GPIO_PORT(PA9), GPIO_PORT(PA10), GPIO_PORT(PA15), GPIO_PORT(PB3), GPIO_PORT(PB4), GPIO_PORT(PB5), GPIO_PORT(PB6), GPIO_PORT(PB7), GPIO_PORT(PB8), GPIO_PORT(PB9), GPIO_PORT(PB10)}; /**< GPIO ports for signal pin */
@ -173,20 +175,51 @@ static void print_idcode(uint32_t idcode)
// menu commands
/** measure and print target voltage
* @param[in] argument not used
* @param[in] argument 0 to no provide power, 3 to provide 3.3V, 5 to provide 5V
*/
static void command_target_voltage(void* argument)
{
(void)argument; // we won't use the argument
gpio_set(GPIO_PORT(TARGET_EN), GPIO_PIN(TARGET_EN)); // ensure the level shifters pulling up the signals are not enabled
// set voltage
if (argument) { // if argument is provided
const uint8_t voltage = *(uint32_t*)argument; // get target voltage
switch (voltage) {
case 0:
gpio_set(GPIO_PORT(TARGET_5V), GPIO_PIN(TARGET_5V)); // disable 5V output
gpio_set(GPIO_PORT(TARGET_3V), GPIO_PIN(TARGET_3V)); // disable 3V output
break;
case 3:
gpio_set(GPIO_PORT(TARGET_5V), GPIO_PIN(TARGET_5V)); // disable 5V output
gpio_clear(GPIO_PORT(TARGET_3V), GPIO_PIN(TARGET_3V)); // enable 3V output
break;
case 5:
gpio_clear(GPIO_PORT(TARGET_5V), GPIO_PIN(TARGET_5V)); // enable 5V output
gpio_set(GPIO_PORT(TARGET_3V), GPIO_PIN(TARGET_3V)); // disable 3V output
break;
default:
puts("unknown voltage to set\n");
break;
}
sleep_us(100); // wait a bit for voltage to settle
}
// show voltage output
if (!gpio_get(GPIO_PORT(TARGET_5V), GPIO_PIN(TARGET_5V))) {
puts("target voltage set to 5 V\n");
} else if (!gpio_get(GPIO_PORT(TARGET_3V), GPIO_PIN(TARGET_3V))) {
puts("target voltage set to 3.3 V\n");
} else {
puts("target voltage externally provided\n");
}
float* voltages = measure_voltages(); // measure voltages
puts("target voltage: ");
print_fpu(voltages[1], 2);
puts(" V");
if (voltages[1] > 3.25) {
puts(" (warning: signal voltage may exceed 3.30 V limit)");
} else if (voltages[1] < 1.0) {
if (voltages[1] < 1.0) {
puts(" (warning: target voltage seems not connected)");
}
putc('\n');
@ -683,9 +716,9 @@ static const struct menu_command_t menu_commands[] = {
{
.shortcut = 'v',
.name = "voltage",
.command_description = "measure target voltage",
.argument = MENU_ARGUMENT_NONE,
.argument_description = NULL,
.command_description = "set/measure target voltage",
.argument = MENU_ARGUMENT_UNSIGNED,
.argument_description = "[0|3|5]",
.command_handler = &command_target_voltage,
},
{
@ -842,6 +875,14 @@ void main(void)
gpio_set(GPIO_PORT(TARGET_EN), GPIO_PIN(TARGET_EN)); // ensure we do not enable pMOS to power level shifters
gpio_set_output_options(GPIO_PORT(TARGET_EN), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_EN)); // set output as open-drain
gpio_mode_setup(GPIO_PORT(TARGET_EN), GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN(TARGET_EN)); // configure pin as output
rcc_periph_clock_enable(GPIO_RCC(TARGET_3V)); // enable clock for port domain
gpio_set(GPIO_PORT(TARGET_3V), GPIO_PIN(TARGET_3V)); // ensure we do not enable pMOS to provide voltage
gpio_set_output_options(GPIO_PORT(TARGET_3V), GPIO_OTYPE_OD, GPIO_OSPEED_2MHZ, GPIO_PIN(TARGET_3V)); // set output as open-drain
gpio_mode_setup(GPIO_PORT(TARGET_3V), GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN(TARGET_3V)); // configure pin as output
rcc_periph_clock_enable(GPIO_RCC(TARGET_5V)); // enable clock for port domain
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
puts("OK\n");
puts("setup signal pins: ");