void adc_init( void ) {
uint8_t x=0;
// ADC channel mapping
uint8_t adc_channel_map[4];
/* Init GPIO ports for ADC operation
*/
#if USE_ADC_1
PRINT_CONFIG_MSG("Info: Using ADC_1");
gpio_setup_pin_analog(ADC_1_GPIO_PORT, ADC_1_GPIO_PIN);
#endif
#if USE_ADC_2
PRINT_CONFIG_MSG("Info: Using ADC_2");
gpio_setup_pin_analog(ADC_2_GPIO_PORT, ADC_2_GPIO_PIN);
#endif
#if USE_ADC_3
PRINT_CONFIG_MSG("Info: Using ADC_3");
gpio_setup_pin_analog(ADC_3_GPIO_PORT, ADC_3_GPIO_PIN);
#endif
#if USE_ADC_4
PRINT_CONFIG_MSG("Info: Using ADC_4");
gpio_setup_pin_analog(ADC_4_GPIO_PORT, ADC_4_GPIO_PIN);
#endif
#if USE_ADC_5
PRINT_CONFIG_MSG("Info: Using ADC_5");
gpio_setup_pin_analog(ADC_5_GPIO_PORT, ADC_5_GPIO_PIN);
#endif
#if USE_ADC_6
PRINT_CONFIG_MSG("Info: Using ADC_6");
gpio_setup_pin_analog(ADC_6_GPIO_PORT, ADC_6_GPIO_PIN);
#endif
#if USE_ADC_7
PRINT_CONFIG_MSG("Info: Using ADC_7");
gpio_setup_pin_analog(ADC_7_GPIO_PORT, ADC_7_GPIO_PIN);
#endif
#if USE_ADC_8
PRINT_CONFIG_MSG("Info: Using ADC_8");
gpio_setup_pin_analog(ADC_8_GPIO_PORT, ADC_8_GPIO_PIN);
#endif
#if USE_ADC_9
PRINT_CONFIG_MSG("Info: Using ADC_9");
gpio_setup_pin_analog(ADC_9_GPIO_PORT, ADC_9_GPIO_PIN);
#endif
// Init clock and irq
adc_init_rcc();
adc_init_irq();
/* If fewer than 4 channels are active, say 3, then they are placed in to
* injection slots 2,3 and 4 because the stm32 architecture converts injected
* slots 2,3 and 4 and skips slot 1 instead of logicaly converting slots 1,2
* and 3 and leave slot 4.
* EXAMPLE OF ADC EXECUTION ORDER WHEN WE HAVE SAY 2 ADC INPUTS USED on ADC1
* The first board adc channel ADC1_1 is mapped to injected channel 3 and ADC1_2
* to injected channel 4 and because the conversions start from the lowest
* injection channel used, 3 in our case, injected channel 3 data will be
* located at JDR1 and 4 to JDR2 so JDR1 = ADC1_1 and JDR2 = ADC1_2.
* That's why "adc_channel_map" has this descending order.
*/
nb_adc1_channels = NB_ADC1_CHANNELS;
#if USE_AD1
#ifdef AD1_1_CHANNEL
adc_channel_map[AD1_1] = AD1_1_CHANNEL;
#endif
#ifdef AD1_2_CHANNEL
adc_channel_map[AD1_2] = AD1_2_CHANNEL;
#endif
#ifdef AD1_3_CHANNEL
adc_channel_map[AD1_3] = AD1_3_CHANNEL;
#endif
#ifdef AD1_4_CHANNEL
adc_channel_map[AD1_4] = AD1_4_CHANNEL;
#endif
// initialize buffer pointers with 0 (not set). Buffer null pointers will be ignored in interrupt
// handler, which is important as there are no buffers registered at the time the ADC trigger
// interrupt is enabled.
for (x = 0; x < 4; x++) { adc1_buffers[x] = NULL; }
adc_init_single(ADC1, nb_adc1_channels, adc_channel_map);
#endif // USE_AD1
nb_adc2_channels = NB_ADC2_CHANNELS;
#if USE_AD2
#ifdef AD2_1_CHANNEL
adc_channel_map[AD2_1] = AD2_1_CHANNEL;
#endif
#ifdef AD2_2_CHANNEL
adc_channel_map[AD2_2] = AD2_2_CHANNEL;
#endif
#ifdef AD2_3_CHANNEL
adc_channel_map[AD2_3] = AD2_3_CHANNEL;
#endif
#ifdef AD2_4_CHANNEL
adc_channel_map[AD2_4] = AD2_4_CHANNEL;
#endif
// initialize buffer pointers with 0 (not set). Buffer null pointers will be ignored in interrupt
// handler, which is important as there are no buffers registered at the time the ADC trigger
// interrupt is enabled.
for (x = 0; x < 4; x++) { adc2_buffers[x] = NULL; }
adc_init_single(ADC2, nb_adc2_channels, adc_channel_map);
#endif // USE_AD2
nb_adc3_channels = NB_ADC3_CHANNELS;
#if USE_AD3
#ifdef AD3_1_CHANNEL
adc_channel_map[AD3_1] = AD3_1_CHANNEL;
#endif
#ifdef AD3_2_CHANNEL
adc_channel_map[AD3_2] = AD3_2_CHANNEL;
#endif
#ifdef AD3_3_CHANNEL
adc_channel_map[AD3_3] = AD3_3_CHANNEL;
#endif
#ifdef AD3_4_CHANNEL
adc_channel_map[AD3_4] = AD3_4_CHANNEL;
#endif
// initialize buffer pointers with 0 (not set). Buffer null pointers will be ignored in interrupt
// handler, which is important as there are no buffers registered at the time the ADC trigger
// interrupt is enabled.
for (x = 0; x < 4; x++) { adc3_buffers[x] = NULL; }
adc_init_single(ADC3, nb_adc3_channels, adc_channel_map);
#endif // USE_AD3
adc_new_data_trigger = FALSE;
#if USE_ADC_WATCHDOG
adc_watchdog.cb = NULL;
adc_watchdog.timeStamp=0;
#endif
}
/**
* Adc init
*
* Initialize ADC drivers, buffers and start conversion in the background
*/
void adc_init(void)
{
/* Init GPIO ports for ADC operation
*/
#if USE_ADC_1
PRINT_CONFIG_MSG("Info: Using ADC_1");
gpio_setup_pin_analog(ADC_1_GPIO_PORT, ADC_1_GPIO_PIN);
#endif
#if USE_ADC_2
PRINT_CONFIG_MSG("Info: Using ADC_2");
gpio_setup_pin_analog(ADC_2_GPIO_PORT, ADC_2_GPIO_PIN);
#endif
#if USE_ADC_3
PRINT_CONFIG_MSG("Info: Using ADC_3");
gpio_setup_pin_analog(ADC_3_GPIO_PORT, ADC_3_GPIO_PIN);
#endif
#if USE_ADC_4
PRINT_CONFIG_MSG("Info: Using ADC_4");
gpio_setup_pin_analog(ADC_4_GPIO_PORT, ADC_4_GPIO_PIN);
#endif
#if USE_ADC_5
PRINT_CONFIG_MSG("Info: Using ADC_5");
gpio_setup_pin_analog(ADC_5_GPIO_PORT, ADC_5_GPIO_PIN);
#endif
#if USE_ADC_6
PRINT_CONFIG_MSG("Info: Using ADC_6");
gpio_setup_pin_analog(ADC_6_GPIO_PORT, ADC_6_GPIO_PIN);
#endif
#if USE_ADC_7
PRINT_CONFIG_MSG("Info: Using ADC_7");
gpio_setup_pin_analog(ADC_7_GPIO_PORT, ADC_7_GPIO_PIN);
#endif
#if USE_ADC_8
PRINT_CONFIG_MSG("Info: Using ADC_8");
gpio_setup_pin_analog(ADC_8_GPIO_PORT, ADC_8_GPIO_PIN);
#endif
#if USE_ADC_9
PRINT_CONFIG_MSG("Info: Using ADC_9");
gpio_setup_pin_analog(ADC_9_GPIO_PORT, ADC_9_GPIO_PIN);
#endif
// Configurtion register
uint32_t sqr1, sqr2, sqr3;
adc_regular_sequence(&sqr1, &sqr2, &sqr3, ADC_NUM_CHANNELS, adc_channel_map);
#ifdef __STM32F10x_H
uint32_t smpr1, smpr2;
adc_sample_time_on_all_channels(&smpr1, &smpr2, ADC_SAMPLE_41P5);
adcgrpcfg.cr2 = ADC_CR2_TSVREFE;
#elif defined(__STM32F4xx_H)
uint32_t smpr1, smpr2;
adc_sample_time_on_all_channels(&smpr1, &smpr2, ADC_SAMPLE_480);
adcgrpcfg.cr2 = ADC_CR2_SWSTART;
#endif
#if USE_ADC_WATCHDOG
adc_watchdog.adc = NULL;
adc_watchdog.cb = NULL;
adc_watchdog.channel = 0;
adc_watchdog.vmin = (1<<12)-1; // max adc
#endif
adcgrpcfg.circular = TRUE;
adcgrpcfg.num_channels = ADC_NUM_CHANNELS;
adcgrpcfg.end_cb = adc1callback;
adcgrpcfg.error_cb = adcerrorcallback;
adcgrpcfg.cr1 = 0;
adcgrpcfg.smpr1 = smpr1;
adcgrpcfg.smpr2 = smpr2;
adcgrpcfg.sqr1 = sqr1;
adcgrpcfg.sqr2 = sqr2;
adcgrpcfg.sqr3 = sqr3;
// Start ADC in continious conversion mode
adcStart(&ADCD1, NULL);
adcStartConversion(&ADCD1, &adcgrpcfg, adc_samples, ADC_BUF_DEPTH);
}
