void adc_init (void) { rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN); rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN); rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN); gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1); //PA1 joint_1 gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO2); //PA2 joint_2 gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO3); //PA3 joint_3 gpio_mode_setup(GPIOC, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1); //PC1 joint_4 gpio_mode_setup(GPIOC, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO2); //PC2 joint_5 gpio_mode_setup(GPIOC, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO5); //PC5 joint_6 adc_set_clk_prescale(ADC_CCR_ADCPRE_BY2); adc_disable_scan_mode(ADC1); adc_set_single_conversion_mode(ADC1); adc_set_sample_time(ADC1, ADC_CHANNEL1, ADC_SMPR_SMP_3CYC); //joint_1 adc_set_sample_time(ADC1, ADC_CHANNEL2, ADC_SMPR_SMP_3CYC); //joint_2 adc_set_sample_time(ADC1, ADC_CHANNEL3, ADC_SMPR_SMP_3CYC); //joint_3 adc_set_sample_time(ADC1, ADC_CHANNEL11, ADC_SMPR_SMP_3CYC); //joint_4 adc_set_sample_time(ADC1, ADC_CHANNEL12, ADC_SMPR_SMP_3CYC); //joint_5 adc_set_sample_time(ADC1, ADC_CHANNEL15, ADC_SMPR_SMP_3CYC); //joint_6 adc_set_multi_mode(ADC_CCR_MULTI_INDEPENDENT); adc_power_on(ADC1); //nvic_enable_irq(NVIC_ADC_IRQ); //adc_enable_eoc_interrupt(ADC1); //adc_disable_eoc_interrupt(ADC1); }
void battery_setup() { gpio_mode_setup(BAT_STAT_PORT, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, BAT_STAT1_PORT | BAT_STAT2_PORT | BAT_PG_PORT); gpio_mode_setup(BAT_SENSE_PORT, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, BAT_SENSE_PIN); adc_off(BAT_SENSE_ADC); adc_disable_scan_mode(BAT_SENSE_ADC); adc_set_single_conversion_mode(ADC1); adc_set_sample_time(ADC1, ADC_CHANNEL10, ADC_SMPR_SMP_15CYC); uint8_t channels[] = {ADC_CHANNEL10}; adc_set_regular_sequence(BAT_SENSE_ADC, 1, channels); adc_power_on(BAT_SENSE_ADC); }
/*--------------------------------------------------------------------*/ void adc_setup(void) { rcc_periph_clock_enable(RCC_ADC1); rcc_periph_clock_enable(RCC_GPIOA); nvic_enable_irq(NVIC_ADC_IRQ); /* Set port PA1 for ADC1 to analogue mode. */ gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1); adc_power_on(ADC1); uint8_t channel[1] = { ADC_CHANNEL1 }; adc_set_regular_sequence(ADC1, 1, channel); adc_set_clk_prescale(ADC_CCR_ADCPRE_BY2); adc_enable_scan_mode(ADC1); adc_set_continuous_conversion_mode(ADC1); adc_set_sample_time(ADC1, ADC_CHANNEL1, ADC_SMPR_SMP_3CYC); adc_set_multi_mode(ADC_CCR_MULTI_INDEPENDENT); adc_set_dma_continue(ADC1); adc_enable_dma(ADC1); adc_enable_overrun_interrupt(ADC1); }
/** * Enable selected channels on specified ADC. * Usage: * * adc_init_single(ADC1, 1, 1, 0, 0); * * ... would enable ADC1, enabling channels 1 and 2, * but not 3 and 4. */ static inline void adc_init_single(uint32_t adc, uint8_t chan1, uint8_t chan2, uint8_t chan3, uint8_t chan4) { uint8_t num_channels, rank; uint8_t channels[4]; // Paranoia, must be down for 2+ ADC clock cycles before calibration adc_off(adc); /* enable adc clock */ if (adc == ADC1) { #ifdef USE_AD1 num_channels = NB_ADC1_CHANNELS; ADC1_GPIO_INIT(); #endif } else if (adc == ADC2) { #ifdef USE_AD2 num_channels = NB_ADC2_CHANNELS; ADC2_GPIO_INIT(); #endif } /* Configure ADC */ /* Explicitly setting most registers, reset/default values are correct for most */ /* Set CR1 register. */ /* Clear AWDEN */ adc_disable_analog_watchdog_regular(adc); /* Clear JAWDEN */ adc_disable_analog_watchdog_injected(adc); /* Clear DISCEN */ adc_disable_discontinuous_mode_regular(adc); /* Clear JDISCEN */ adc_disable_discontinuous_mode_injected(adc); /* Clear JAUTO */ adc_disable_automatic_injected_group_conversion(adc); /* Set SCAN */ adc_enable_scan_mode(adc); /* Enable ADC<X> JEOC interrupt (Set JEOCIE) */ adc_enable_eoc_interrupt_injected(adc); /* Clear AWDIE */ adc_disable_awd_interrupt(adc); /* Clear EOCIE */ adc_disable_eoc_interrupt(adc); /* Set CR2 register. */ /* Clear TSVREFE */ adc_disable_temperature_sensor(adc); /* Clear EXTTRIG */ adc_disable_external_trigger_regular(adc); /* Clear ALIGN */ adc_set_right_aligned(adc); /* Clear DMA */ adc_disable_dma(adc); /* Clear CONT */ adc_set_single_conversion_mode(adc); rank = 0; if (chan1) { adc_set_sample_time(adc, adc_channel_map[0], ADC_SMPR1_SMP_41DOT5CYC); channels[rank] = adc_channel_map[0]; rank++; } if (chan2) { adc_set_sample_time(adc, adc_channel_map[1], ADC_SMPR1_SMP_41DOT5CYC); channels[rank] = adc_channel_map[1]; rank++; } if (chan3) { adc_set_sample_time(adc, adc_channel_map[2], ADC_SMPR1_SMP_41DOT5CYC); channels[rank] = adc_channel_map[2]; rank++; } if (chan4) { adc_set_sample_time(adc, adc_channel_map[3], ADC_SMPR1_SMP_41DOT5CYC); channels[rank] = adc_channel_map[3]; } adc_set_injected_sequence(adc, num_channels, channels); #if USE_AD_TIM4 #pragma message "Info: Using TIM4 for ADC" adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM4_TRGO); #elif USE_AD_TIM1 #pragma message "Info: Using TIM1 for ADC" adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM1_TRGO); #else #pragma message "Info: Using default TIM2 for ADC" adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM2_TRGO); #endif /* Enable ADC<X> */ adc_power_on(adc); /* Enable ADC<X> reset calibaration register */ adc_reset_calibration(adc); /* Check the end of ADC<X> reset calibration */ while ((ADC_CR2(adc) & ADC_CR2_RSTCAL) != 0); /* Start ADC<X> calibaration */ adc_calibration(adc); /* Check the end of ADC<X> calibration */ while ((ADC_CR2(adc) & ADC_CR2_CAL) != 0); } // adc_init_single
static inline void adc_init_single(uint32_t adc, uint8_t nb_channels, uint8_t* channel_map) { uint8_t x = 0; // Paranoia, must be down for 2+ ADC clock cycles before calibration adc_off(adc); /* Configure ADC */ /* Explicitly setting most registers, reset/default values are correct for most */ /* Set CR1 register. */ /* Clear AWDEN */ adc_disable_analog_watchdog_regular(adc); /* Clear JAWDEN */ adc_disable_analog_watchdog_injected(adc); /* Clear DISCEN */ adc_disable_discontinuous_mode_regular(adc); /* Clear JDISCEN */ adc_disable_discontinuous_mode_injected(adc); /* Clear JAUTO */ adc_disable_automatic_injected_group_conversion(adc); /* Set SCAN */ adc_enable_scan_mode(adc); /* Enable ADC<X> JEOC interrupt (Set JEOCIE) */ adc_enable_eoc_interrupt_injected(adc); /* Clear AWDIE */ adc_disable_awd_interrupt(adc); /* Clear EOCIE */ adc_disable_eoc_interrupt(adc); /* Set CR2 register. */ /* Clear TSVREFE */ #if defined(STM32F1) adc_disable_temperature_sensor(adc); #elif defined(STM32F4) adc_disable_temperature_sensor(); #endif /* Clear EXTTRIG */ adc_disable_external_trigger_regular(adc); /* Clear ALIGN */ adc_set_right_aligned(adc); /* Clear DMA */ adc_disable_dma(adc); /* Clear CONT */ adc_set_single_conversion_mode(adc); for (x = (4-nb_channels); x < 4; x++) { adc_set_sample_time(adc, channel_map[x], ADC_SAMPLE_TIME); } adc_set_injected_sequence(adc, nb_channels, channel_map); #if USE_AD_TIM4 PRINT_CONFIG_MSG("Info: Using TIM4 for ADC") #if defined(STM32F1) adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM4_TRGO); #elif defined(STM32F4) adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM4_TRGO, ADC_CR2_JEXTEN_BOTH_EDGES); #endif #elif USE_AD_TIM1 PRINT_CONFIG_MSG("Info: Using TIM1 for ADC") #if defined(STM32F1) adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM1_TRGO); #elif defined(STM32F4) adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM1_TRGO, ADC_CR2_JEXTEN_BOTH_EDGES); #endif #else PRINT_CONFIG_MSG("Info: Using default TIM2 for ADC") #if defined(STM32F1) adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM2_TRGO); #elif defined(STM32F4) adc_enable_external_trigger_injected(adc, ADC_CR2_JEXTSEL_TIM2_TRGO, ADC_CR2_JEXTEN_BOTH_EDGES); #endif #endif /* Enable ADC<X> */ adc_power_on(adc); #if defined(STM32F1) /* Enable ADC<X> reset calibaration register */ adc_reset_calibration(adc); /* Check the end of ADC<X> reset calibration */ while ((ADC_CR2(adc) & ADC_CR2_RSTCAL) != 0); /* Start ADC<X> calibaration */ adc_calibration(adc); /* Check the end of ADC<X> calibration */ while ((ADC_CR2(adc) & ADC_CR2_CAL) != 0); #endif return; } // adc_init_single