mhu/reflow-oven-control-sw
2
0
Fork 0
Code Issues 4 Pull Requests Releases 4 Wiki Activity

Add safety management in PID handler and main loop

Browse Source
This commit is contained in:
Mario Hüttel
2020-06-14 19:09:59 +02:00
parent a33154b2d0
commit cbd28f9a12
5 changed files with 129 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
stm-firmware/main.c
View File

@@ -198,13 +198,17 @@ static void zero_ccm_ram(void)
ptr[i] = 0UL;
}
volatile bool error_state = false;
volatile enum safety_adc_check_result safety_adc_status = SAFETY_ADC_CHECK_OK;
int main()
{
bool sd_card_mounted = false;
shellmatta_handle_t shell_handle;
int menu_wait_request;
uint64_t quarter_sec_timestamp = 0ULL;
enum safety_adc_check_result safety_adc_status;
const struct oven_pid_status *pid_status;
enum adc_pt1000_error pt1000_status;
zero_ccm_ram();
setup_system();
@@ -215,14 +219,46 @@ int main()
while (1) {
sd_card_mounted = mount_sd_card_if_avail(sd_card_mounted);
pid_status = oven_pid_get_status();
if(systick_ticks_have_passed(quarter_sec_timestamp, 250)) {
safety_adc_status = handle_safety_adc();
quarter_sec_timestamp = systick_get_global_tick();
if (safety_adc_status & SAFETY_ADC_CHECK_TEMP_LOW || safety_adc_status & SAFETY_ADC_CHECK_TEMP_HIGH) {
oven_pid_report_error(OVEN_PID_ERR_OVERTEMP);
}
if (safety_adc_status & SAFETY_ADC_CHECK_VREF_LOW || safety_adc_status & SAFETY_ADC_CHECK_VREF_HIGH) {
oven_pid_report_error(OVEN_PID_ERR_VREF_TOL);
}
if (safety_adc_status & SAFETY_ADC_INTERNAL_ERROR) {
oven_pid_report_error(0);
}
if (error_state) {
led_set(1, !led_get(1));
} else {
led_set(1, 0);
}
pt1000_status = adc_pt1000_check_error();
}
error_state = pid_status->aborted | !!safety_adc_status | !!pt1000_status;
menu_wait_request = reflow_menu_handle();
/* Deactivate oven output in case of error! */
if (!pid_status->active || pid_status->aborted || error_state) {
oven_pid_stop();
oven_driver_set_power(0U);
}
handle_shell_uart_input(shell_handle);
menu_wait_request = reflow_menu_handle();
if (menu_wait_request)
__WFI();