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Add supply voltage monitor to safety adc and safety controller

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This commit is contained in:
Mario Hüttel 2021-01-01 19:48:53 +01:00
parent 0e114d1344
commit 7c6205d20a
5 changed files with 55 additions and 8 deletions
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12
stm-firmware/include/reflow-controller/periph-config/safety-adc-hwcfg.h
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@ -49,6 +49,12 @@
*/ */
#define INT_REF_CHANNEL_NUM (17) #define INT_REF_CHANNEL_NUM (17)
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM (15)
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PIN (5)
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PORT GPIOC
#define SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PORT_RCC_MASK RCC_AHB1ENR_GPIOCEN
/** /**
* @brief Nominal value of the internal reference voltage. * @brief Nominal value of the internal reference voltage.
* *
@ -77,7 +83,7 @@
* @brief Number of channels to handle for the SAFETY ADC. * @brief Number of channels to handle for the SAFETY ADC.
* @note The maximum amount of channels is limited to 16 * @note The maximum amount of channels is limited to 16
*/ */
#define SAFETY_ADC_NUM_OF_CHANNELS 8 #define SAFETY_ADC_NUM_OF_CHANNELS 12
/** /**
* @brief Channel numbers to sample with the SAFETY ADC * @brief Channel numbers to sample with the SAFETY ADC
@ -91,7 +97,9 @@
* @warning Safety controller expects the current measurment list. If you change it, check @ref safety_controller_handle_safety_adc * @warning Safety controller expects the current measurment list. If you change it, check @ref safety_controller_handle_safety_adc
*/ */
#define SAFETY_ADC_CHANNELS TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, \ #define SAFETY_ADC_CHANNELS TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, TEMP_CHANNEL_NUM, \
INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, INT_REF_CHANNEL_NUM, \
SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM, SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM, \
SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM, SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_CHANNEL_NUM
/* Check the channel count of the safety ADC */ /* Check the channel count of the safety ADC */

1
stm-firmware/include/reflow-controller/safety/safety-adc.h
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@ -35,6 +35,7 @@
enum safety_adc_meas_channel { enum safety_adc_meas_channel {
SAFETY_ADC_MEAS_VREF, /**< @brief Internal reference voltage @note This will not output the internal reference voltage but the recalculated external voltage! */ SAFETY_ADC_MEAS_VREF, /**< @brief Internal reference voltage @note This will not output the internal reference voltage but the recalculated external voltage! */
SAFETY_ADC_MEAS_TEMP, /**< @brief Internal temperature sensor */ SAFETY_ADC_MEAS_TEMP, /**< @brief Internal temperature sensor */
SAFETY_ADC_MEAS_SUPPLY, /**< @brief Supply voltage */
}; };
/** /**

11
stm-firmware/include/reflow-controller/safety/safety-config.h
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@ -52,6 +52,7 @@ enum safety_flag {
ERR_FLAG_TIMING_MAIN_LOOP = (1<<14), ERR_FLAG_TIMING_MAIN_LOOP = (1<<14),
ERR_FLAG_SAFETY_MEM_CORRUPT = (1<<15), ERR_FLAG_SAFETY_MEM_CORRUPT = (1<<15),
ERR_FLAG_SAFETY_TAB_CORRUPT = (1<<16), ERR_FLAG_SAFETY_TAB_CORRUPT = (1<<16),
ERR_FLAG_AMON_SUPPLY_VOLT = (1<<17),
}; };
/** /**
@ -76,6 +77,7 @@ enum timing_monitor {
enum analog_value_monitor { enum analog_value_monitor {
ERR_AMON_VREF = (1<<0), ERR_AMON_VREF = (1<<0),
ERR_AMON_UC_TEMP = (1<<1), ERR_AMON_UC_TEMP = (1<<1),
ERR_AMON_SUPPLY_VOLT = (1<<2),
}; };
#define ERR_FLAG_ENTRY(errflag) {.name=#errflag, .flag = (errflag), .error_state = false, .error_state_inv = true, .key = 0UL, .weight = NULL, .persistency = NULL} #define ERR_FLAG_ENTRY(errflag) {.name=#errflag, .flag = (errflag), .error_state = false, .error_state_inv = true, .key = 0UL, .weight = NULL, .persistency = NULL}
@ -117,7 +119,8 @@ enum analog_value_monitor {
#define SAFETY_ADC_VREF_TOL_MVOLT (100.0f) #define SAFETY_ADC_VREF_TOL_MVOLT (100.0f)
#define SAFETY_ADC_TEMP_LOW_LIM (0.0f) #define SAFETY_ADC_TEMP_LOW_LIM (0.0f)
#define SAFETY_ADC_TEMP_HIGH_LIM (65.0f) #define SAFETY_ADC_TEMP_HIGH_LIM (65.0f)
#define SAFETY_ADC_SUPPLY_MVOLT (3300.0f)
#define SAFETY_ADC_SUPPLY_TOL_MVOLT (150.0f)
#define SAFETY_EXT_WATCHDOG_PORT GPIOD #define SAFETY_EXT_WATCHDOG_PORT GPIOD
#define SAFETY_EXT_WATCHDOG_RCC_MASK RCC_AHB1ENR_GPIODEN #define SAFETY_EXT_WATCHDOG_RCC_MASK RCC_AHB1ENR_GPIODEN
@ -149,7 +152,8 @@ enum analog_value_monitor {
ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_DEBUG, true), \ ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_DEBUG, true), \
ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_TIMING_MAIN_LOOP, true), \ ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_TIMING_MAIN_LOOP, true), \
ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_SAFETY_MEM_CORRUPT, true), \ ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_SAFETY_MEM_CORRUPT, true), \
ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_SAFETY_TAB_CORRUPT, true), ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_SAFETY_TAB_CORRUPT, true), \
ERR_FLAG_PERSIST_ENTRY(ERR_FLAG_AMON_SUPPLY_VOLT, false), \
#define SAFETY_CONFIG_DEFAULT_WEIGHTS ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_MEAS_ADC_OFF, SAFETY_FLAG_CONFIG_WEIGHT_PID), \ #define SAFETY_CONFIG_DEFAULT_WEIGHTS ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_MEAS_ADC_OFF, SAFETY_FLAG_CONFIG_WEIGHT_PID), \
ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_MEAS_ADC_WATCHDOG, SAFETY_FLAG_CONFIG_WEIGHT_PID), \ ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_MEAS_ADC_WATCHDOG, SAFETY_FLAG_CONFIG_WEIGHT_PID), \
@ -169,6 +173,7 @@ enum analog_value_monitor {
ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_DEBUG, SAFETY_FLAG_CONFIG_WEIGHT_NONE), \ ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_DEBUG, SAFETY_FLAG_CONFIG_WEIGHT_NONE), \
ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_TIMING_MAIN_LOOP, SAFETY_FLAG_CONFIG_WEIGHT_PANIC), \ ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_TIMING_MAIN_LOOP, SAFETY_FLAG_CONFIG_WEIGHT_PANIC), \
ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_SAFETY_MEM_CORRUPT, SAFETY_FLAG_CONFIG_WEIGHT_PID), \ ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_SAFETY_MEM_CORRUPT, SAFETY_FLAG_CONFIG_WEIGHT_PID), \
ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_SAFETY_TAB_CORRUPT, SAFETY_FLAG_CONFIG_WEIGHT_PANIC), ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_SAFETY_TAB_CORRUPT, SAFETY_FLAG_CONFIG_WEIGHT_PANIC), \
ERR_FLAG_WEIGHT_ENTRY(ERR_FLAG_AMON_SUPPLY_VOLT, SAFETY_FLAG_CONFIG_WEIGHT_PID), \
#endif /* __SAFETY_CONFIG_H__ */ #endif /* __SAFETY_CONFIG_H__ */

22
stm-firmware/safety/safety-adc.c
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@ -27,6 +27,7 @@
#include <reflow-controller/periph-config/safety-adc-hwcfg.h> #include <reflow-controller/periph-config/safety-adc-hwcfg.h>
#include <helper-macros/helper-macros.h> #include <helper-macros/helper-macros.h>
#include <stm-periph/rcc-manager.h> #include <stm-periph/rcc-manager.h>
#include <reflow-controller/hw-version-detect.h>
static const uint8_t safety_adc_channels[SAFETY_ADC_NUM_OF_CHANNELS] = {SAFETY_ADC_CHANNELS}; static const uint8_t safety_adc_channels[SAFETY_ADC_NUM_OF_CHANNELS] = {SAFETY_ADC_CHANNELS};
static volatile uint8_t safety_adc_conversion_complete; static volatile uint8_t safety_adc_conversion_complete;
@ -35,16 +36,25 @@ static volatile uint16_t safety_adc_conversions[SAFETY_ADC_NUM_OF_CHANNELS];
void safety_adc_init(void) void safety_adc_init(void)
{ {
enum hw_revision hw_rev;
int i; int i;
hw_rev = get_pcb_hardware_version();
rcc_manager_enable_clock(&RCC->APB2ENR, BITMASK_TO_BITNO(SAFETY_ADC_ADC_RCC_MASK)); rcc_manager_enable_clock(&RCC->APB2ENR, BITMASK_TO_BITNO(SAFETY_ADC_ADC_RCC_MASK));
rcc_manager_enable_clock(&RCC->AHB1ENR, BITMASK_TO_BITNO(RCC_AHB1ENR_DMA2EN)); rcc_manager_enable_clock(&RCC->AHB1ENR, BITMASK_TO_BITNO(RCC_AHB1ENR_DMA2EN));
if (hw_rev != HW_REV_V1_2) {
rcc_manager_enable_clock(&RCC->AHB1ENR, BITMASK_TO_BITNO(SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PORT_RCC_MASK));
SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PORT->MODER &= MODER_DELETE(SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PIN);
SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PORT->MODER |= ANALOG(SAFETY_ADC_SUPPLY_VOLTAGE_MONITOR_PIN);
}
/* Enable temperature and VREFINT measurement */ /* Enable temperature and VREFINT measurement */
ADC->CCR |= ADC_CCR_TSVREFE; ADC->CCR |= ADC_CCR_TSVREFE;
/* Set sample time for channels 16 and 17 */ /* Set sample time for channels 16 and 17 and 15 */
SAFETY_ADC_ADC_PERIPHERAL->SMPR1 |= ADC_SMPR1_SMP17 | ADC_SMPR1_SMP16; SAFETY_ADC_ADC_PERIPHERAL->SMPR1 |= ADC_SMPR1_SMP17 | ADC_SMPR1_SMP16 | ADC_SMPR1_SMP15;
/* Standard sequence. Measure all channels in one sequence */ /* Standard sequence. Measure all channels in one sequence */
SAFETY_ADC_ADC_PERIPHERAL->SQR1 = (SAFETY_ADC_NUM_OF_CHANNELS - 1) << 20 ; SAFETY_ADC_ADC_PERIPHERAL->SQR1 = (SAFETY_ADC_NUM_OF_CHANNELS - 1) << 20 ;
@ -93,6 +103,7 @@ void safety_adc_deinit(void)
float safety_adc_convert_channel(enum safety_adc_meas_channel channel, uint16_t analog_value) float safety_adc_convert_channel(enum safety_adc_meas_channel channel, uint16_t analog_value)
{ {
float converted_val; float converted_val;
enum hw_revision hw_rev;
switch (channel) { switch (channel) {
case SAFETY_ADC_MEAS_TEMP: case SAFETY_ADC_MEAS_TEMP:
@ -102,6 +113,13 @@ float safety_adc_convert_channel(enum safety_adc_meas_channel channel, uint16_t
case SAFETY_ADC_MEAS_VREF: case SAFETY_ADC_MEAS_VREF:
converted_val = (SAFETY_ADC_INT_REF_MV * 4095.0f) / (float)analog_value; converted_val = (SAFETY_ADC_INT_REF_MV * 4095.0f) / (float)analog_value;
break; break;
case SAFETY_ADC_MEAS_SUPPLY:
hw_rev = get_pcb_hardware_version();
if (hw_rev >= HW_REV_V1_3)
converted_val = ((float)analog_value) / 4095.0f * 2500.0f * 2.0f;
else
converted_val = 3300.0f;
break;
default: default:
/* Generate NaN value as default return */ /* Generate NaN value as default return */
converted_val = 0.0f / 0.0f; converted_val = 0.0f / 0.0f;

17
stm-firmware/safety/safety-controller.c
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@ -111,6 +111,7 @@ static volatile struct error_flag IN_SECTION(.ccm.data) flags[] = {
ERR_FLAG_ENTRY(ERR_FLAG_TIMING_MAIN_LOOP), ERR_FLAG_ENTRY(ERR_FLAG_TIMING_MAIN_LOOP),
ERR_FLAG_ENTRY(ERR_FLAG_SAFETY_MEM_CORRUPT), ERR_FLAG_ENTRY(ERR_FLAG_SAFETY_MEM_CORRUPT),
ERR_FLAG_ENTRY(ERR_FLAG_SAFETY_TAB_CORRUPT), ERR_FLAG_ENTRY(ERR_FLAG_SAFETY_TAB_CORRUPT),
ERR_FLAG_ENTRY(ERR_FLAG_AMON_SUPPLY_VOLT),
}; };
static volatile struct timing_mon IN_SECTION(.ccm.data) timings[] = { static volatile struct timing_mon IN_SECTION(.ccm.data) timings[] = {
@ -124,7 +125,10 @@ static volatile struct analog_mon IN_SECTION(.ccm.data) analog_mons[] = {
ANA_MON_ENTRY(ERR_AMON_VREF, SAFETY_ADC_VREF_MVOLT - SAFETY_ADC_VREF_TOL_MVOLT, ANA_MON_ENTRY(ERR_AMON_VREF, SAFETY_ADC_VREF_MVOLT - SAFETY_ADC_VREF_TOL_MVOLT,
SAFETY_ADC_VREF_MVOLT + SAFETY_ADC_VREF_TOL_MVOLT, ERR_FLAG_AMON_VREF), SAFETY_ADC_VREF_MVOLT + SAFETY_ADC_VREF_TOL_MVOLT, ERR_FLAG_AMON_VREF),
ANA_MON_ENTRY(ERR_AMON_UC_TEMP, SAFETY_ADC_TEMP_LOW_LIM, SAFETY_ADC_TEMP_HIGH_LIM, ANA_MON_ENTRY(ERR_AMON_UC_TEMP, SAFETY_ADC_TEMP_LOW_LIM, SAFETY_ADC_TEMP_HIGH_LIM,
ERR_FLAG_AMON_UC_TEMP), ERR_FLAG_AMON_UC_TEMP),
ANA_MON_ENTRY(ERR_AMON_SUPPLY_VOLT, SAFETY_ADC_SUPPLY_MVOLT - SAFETY_ADC_SUPPLY_TOL_MVOLT,
SAFETY_ADC_SUPPLY_MVOLT + SAFETY_ADC_SUPPLY_TOL_MVOLT,
ERR_FLAG_AMON_SUPPLY_VOLT),
}; };
static const struct safety_weight default_flag_weights[] = { SAFETY_CONFIG_DEFAULT_WEIGHTS }; static const struct safety_weight default_flag_weights[] = { SAFETY_CONFIG_DEFAULT_WEIGHTS };
@ -361,6 +365,9 @@ static void safety_controller_process_monitor_checks()
amon_state = safety_controller_get_analog_mon_value(ERR_AMON_UC_TEMP, &amon_value); amon_state = safety_controller_get_analog_mon_value(ERR_AMON_UC_TEMP, &amon_value);
if (amon_state != ANALOG_MONITOR_OK) if (amon_state != ANALOG_MONITOR_OK)
safety_controller_report_error(ERR_FLAG_AMON_UC_TEMP); safety_controller_report_error(ERR_FLAG_AMON_UC_TEMP);
amon_state = safety_controller_get_analog_mon_value(ERR_AMON_SUPPLY_VOLT, &amon_value);
if (amon_state != ANALOG_MONITOR_OK)
safety_controller_report_error(ERR_FLAG_AMON_SUPPLY_VOLT);
} }
safety_controller_process_active_timing_mons(); safety_controller_process_active_timing_mons();
@ -582,6 +589,14 @@ static void safety_controller_handle_safety_adc()
analog_value = safety_adc_convert_channel(SAFETY_ADC_MEAS_VREF, (uint16_t)sum); analog_value = safety_adc_convert_channel(SAFETY_ADC_MEAS_VREF, (uint16_t)sum);
safety_controller_report_analog_value(ERR_AMON_VREF, analog_value); safety_controller_report_analog_value(ERR_AMON_VREF, analog_value);
/* Compute supply voltage reading */
sum = channels[8] + channels[9] + channels[10] + channels[11];
sum /= 4;
analog_value = safety_adc_convert_channel(SAFETY_ADC_MEAS_SUPPLY, (uint16_t)sum);
safety_controller_report_analog_value(ERR_AMON_SUPPLY_VOLT, analog_value);
last_result_timestamp = systick_get_global_tick(); last_result_timestamp = systick_get_global_tick();
safety_controller_report_timing(ERR_TIMING_SAFETY_ADC); safety_controller_report_timing(ERR_TIMING_SAFETY_ADC);
} }