void adc_setup(void) {
//ADC
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_ADC12EN);
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_IOPAEN);
//ADC
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO0);
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1);
adc_off(ADC1);
adc_set_clk_prescale(ADC_CCR_CKMODE_DIV2);
adc_set_single_conversion_mode(ADC1);
adc_disable_external_trigger_regular(ADC1);
adc_set_right_aligned(ADC1);
/* We want to read the temperature sensor, so we have to enable it. */
adc_enable_temperature_sensor();
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR1_SMP_61DOT5CYC);
uint8_t channel_array[16];
channel_array[0]=16; // Vts (Internal temperature sensor
channel_array[0]=1; //ADC1_IN1 (PA0)
adc_set_regular_sequence(ADC1, 1, channel_array);
adc_set_resolution(ADC1, ADC_CFGR_RES_12_BIT);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
int i;
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
}
/** Configure and enable RCC for peripherals (ADC1, ADC2, Timer) */
static inline void adc_init_rcc( void )
{
#if USE_AD1 || USE_AD2 || USE_AD3
/* Timer peripheral clock enable. */
rcc_periph_clock_enable(RCC_TIM_ADC);
#if defined(STM32F4)
adc_set_clk_prescale(ADC_CCR_ADCPRE_BY2);
#endif
/* Enable ADC peripheral clocks. */
#if USE_AD1
rcc_periph_clock_enable(RCC_ADC1);
#endif
#if USE_AD2
rcc_periph_clock_enable(RCC_ADC2);
#endif
#if USE_AD3
rcc_periph_clock_enable(RCC_ADC3);
#endif
/* Time Base configuration */
timer_reset(TIM_ADC);
timer_set_mode(TIM_ADC, TIM_CR1_CKD_CK_INT,
TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
/* timer counts with ADC_TIMER_FREQUENCY */
uint32_t timer_clk = timer_get_frequency(TIM_ADC);
timer_set_prescaler(TIM_ADC, (timer_clk / ADC_TIMER_FREQUENCY) - 1);
timer_set_period(TIM_ADC, ADC_TIMER_PERIOD);
/* Generate TRGO on every update (when counter reaches period reload value) */
timer_set_master_mode(TIM_ADC, TIM_CR2_MMS_UPDATE);
timer_enable_counter(TIM_ADC);
#endif // USE_AD1 || USE_AD2 || USE_AD3
}
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);
}
/** Configure and enable RCC for peripherals (ADC1, ADC2, Timer) */
static inline void adc_init_rcc( void )
{
#if USE_AD1 || USE_AD2 || USE_AD3
uint32_t timer;
volatile uint32_t *rcc_apbenr;
uint32_t rcc_apb;
#if defined(USE_AD_TIM4)
timer = TIM4;
rcc_apbenr = &RCC_APB1ENR;
rcc_apb = RCC_APB1ENR_TIM4EN;
#elif defined(USE_AD_TIM1)
timer = TIM1;
rcc_apbenr = &RCC_APB2ENR;
rcc_apb = RCC_APB2ENR_TIM1EN;
#else
timer = TIM2;
rcc_apbenr = &RCC_APB1ENR;
rcc_apb = RCC_APB1ENR_TIM2EN;
#endif
/* Timer peripheral clock enable. */
rcc_peripheral_enable_clock(rcc_apbenr, rcc_apb);
#if defined(STM32F4)
adc_set_clk_prescale(ADC_CCR_ADCPRE_BY2);
#endif
/* Enable ADC peripheral clocks. */
#if USE_AD1
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN);
#endif
#if USE_AD2
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC2EN);
#endif
#if USE_AD3
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC3EN);
#endif
/* Time Base configuration */
timer_reset(timer);
timer_set_mode(timer, TIM_CR1_CKD_CK_INT,
TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
#if defined(STM32F1)
timer_set_period(timer, 0xFF);
timer_set_prescaler(timer, 0x8);
#elif defined(STM32F4)
timer_set_period(timer, 0xFFFF);
timer_set_prescaler(timer, 0x53);
#endif
//timer_set_clock_division(timer, 0x0);
/* Generate TRGO on every update. */
timer_set_master_mode(timer, TIM_CR2_MMS_UPDATE);
timer_enable_counter(timer);
#endif // USE_AD1 || USE_AD2 || USE_AD3
}
/*--------------------------------------------------------------------*/
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);
}
