void adc_setup()
{
rcc_periph_clock_enable(RCC_ADC1);
/* Make sure the ADC doesn't run during config. */
adc_off(ADC1);
/* We configure everything for one single conversion. */
adc_disable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
adc_disable_external_trigger_regular(ADC1);
adc_set_right_aligned(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
int i;
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
/* Select the channel we want to convert. 16=temperature_sensor. */
uint8_t channel_array[16];
channel_array[0] = 0;
adc_set_regular_sequence(ADC1, 1, channel_array);
/* Start the conversion directly (not trigger mode). */
adc_start_conversion_direct(ADC1);
}
/**
* Configure a specific adc.
*/
void adc_config(uint32_t adc, const uint8_t const *channel_array)
{
adc_enable_scan_mode(adc);
adc_set_continuous_conversion_mode(adc);
adc_set_right_aligned(adc);
adc_enable_external_trigger_regular(adc, ADC_CR2_EXTSEL_SWSTART);
adc_set_sample_time_on_all_channels(adc, ADC_SAMPLE_TIME);
adc_enable_dma(adc);
adc_power_on(adc);
{
int i;
/* Wait a bit for the adc to power on. */
for (i = 0; i < 800000; i++) {
__asm("nop");
}
}
adc_reset_calibration(adc);
adc_calibration(adc);
adc_set_regular_sequence(adc, ADC_RAW_SAMPLE_COUNT/2,
(uint8_t *)channel_array);
}
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");
}
static void adc_setup(void)
{
rcc_periph_clock_enable(RCC_ADC);
rcc_periph_clock_enable(RCC_GPIOA);
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO0);
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO1);
adc_power_off(ADC1);
adc_set_clk_source(ADC1, ADC_CLKSOURCE_ADC);
adc_calibrate_start(ADC1);
adc_calibrate_wait_finish(ADC1);
adc_set_operation_mode(ADC1, ADC_MODE_SCAN);
adc_disable_external_trigger_regular(ADC1);
adc_set_right_aligned(ADC1);
adc_enable_temperature_sensor();
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPTIME_071DOT5);
adc_set_regular_sequence(ADC1, 1, channel_array);
adc_set_resolution(ADC1, ADC_RESOLUTION_12BIT);
adc_disable_analog_watchdog(ADC1);
adc_power_on(ADC1);
/* Wait for ADC starting up. */
int i;
for (i = 0; i < 800000; i++) { /* Wait a bit. */
__asm__("nop");
}
}
void init_adc_sensor(){
// we will use ADC1 channel 0 for IR sensor & ADC1 channel 1 for laser's photoresistor
uint8_t adc_channel_array[ADC_CHANNEL_NUMBER] = {0,1,6};
// Make sure the ADC doesn't run during config
adc_off(ADC1);
// enable ADC & PA0/PA1 clocking
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_ADC1EN | RCC_APB2ENR_IOPAEN);
rcc_set_adcpre(RCC_CFGR_ADCPRE_PCLK2_DIV4);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_ANALOG, GPIO0 | GPIO1);
rcc_periph_clock_enable(RCC_DMA1); // enable DMA for ADC values storing
// Configure ADC as continuous scan mode with DMA
ADC1_CR1 = ADC_CR1_SCAN; // enable scan mode
// set sample time on channels 1&2: 239.5 cycles for better results
ADC1_SMPR2 = 0x3f;
dma_channel_reset(DMA1, DMA_CHANNEL1);
DMA1_CPAR1 = (uint32_t) &(ADC_DR(ADC1));
DMA1_CMAR1 = (uint32_t) ADC_value;
DMA1_CNDTR1 = ADC_CHANNEL_NUMBER;
DMA1_CCR1 = DMA_CCR_MINC | DMA_CCR_PSIZE_16BIT | DMA_CCR_MSIZE_16BIT
| DMA_CCR_CIRC | DMA_CCR_PL_HIGH | DMA_CCR_EN;
// continuous conv, enable ADC & DMA
ADC1_CR2 = ADC_CR2_CONT | ADC_CR2_ADON | ADC_CR2_DMA;
// set channels
adc_set_regular_sequence(ADC1, ADC_CHANNEL_NUMBER, adc_channel_array);
// reset calibration registers & start calibration
ADC1_CR2 |= ADC_CR2_RSTCAL;
while(ADC1_CR2 & ADC_CR2_RSTCAL); // wait for registers reset
ADC1_CR2 |= ADC_CR2_CAL;
while(ADC1_CR2 & ADC_CR2_CAL); // wait for calibration ends
nvic_enable_irq(NVIC_ADC1_2_IRQ);
ADC1_CR2 |= ADC_CR2_SWSTART;
// turn on ADC - to do it we need set ADC_CR2_ADON again!
ADC1_CR2 |= ADC_CR2_ADON;
}
u16 adc_measure(void){
u8 channel_array[16];
u16 val,valLoaded;
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 6;
adc_set_regular_sequence(ADC1, 1, channel_array);
/*
* Start the conversion directly (not trigger mode).
*/
adc_start_conversion_direct(ADC1);
/* Wait for end of conversion. */
while (!(ADC_SR(ADC1) & ADC_SR_EOC));
val = ADC_DR(ADC1);
return val;
gpio_set(GPIOA, GPIO1);
adc_start_conversion_direct(ADC1);
/* Wait for end of conversion. */
while (!(ADC_SR(ADC1) & ADC_SR_EOC));
valLoaded = ADC_DR(ADC1);
gpio_clear(GPIOA, GPIO5 | GPIO1);
return val - valLoaded;
}
static uint16_t ADC_Measure(uint16_t ch)
{
uint16_t val;
uint8_t channel_array[16];
/* Make sure the ADC doesn't run during config. */
// adc_off(TS_ADC);
/* We configure everything for one single conversion. */
adc_disable_scan_mode(TS_ADC);
adc_set_single_conversion_mode(TS_ADC);
adc_disable_external_trigger_regular(TS_ADC);
adc_set_right_aligned(TS_ADC);
/* ADC regular channel14 configuration */
// adc_set_sample_time(TS_ADC, ch, ADC_SMPR_SMP_55DOT5CYC);
adc_set_sample_time_on_all_channels(TS_ADC, ADC_SMPR_SMP_55DOT5CYC);
// adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
// ADC_RegularChannelConfig(TS_ADC, ch, 1, ADC_SampleTime_55Cycles5);
/* Enable ADC */
// ADC_Cmd(TS_ADC, ENABLE);
adc_power_on(TS_ADC);
delay(100);
#if 1
/* Enable ADC reset calibaration register */
adc_reset_calibration(TS_ADC);
// ADC_ResetCalibration(TS_ADC);
/* Check the end of ADC reset calibration register */
// while(ADC_GetResetCalibrationStatus(TS_ADC));
/* Start ADC calibaration */
// ADC_StartCalibration(TS_ADC);
// adc_calibration(TS_ADC);
adc_calibrate_async(TS_ADC);
/* Check the end of ADC calibration */
// while(ADC_GetCalibrationStatus(TS_ADC));
#endif
/* Select the channel we want to convert. */
channel_array[0] = ch;
adc_set_regular_sequence(TS_ADC, 1, channel_array);
/* Start ADC Software Conversion */
// adc_start_conversion_regular(TS_ADC);
adc_start_conversion_direct(TS_ADC);
while(!adc_eoc(TS_ADC));
// val = adc_read_regular(TS_ADC);
val = ADC_DR(TS_ADC);
// adc_off(TS_ADC);
return val;
}
static uint16_t read_adc_naiive(uint8_t channel)
{
uint8_t channel_array[16];
channel_array[0] = channel;
adc_set_regular_sequence(ADC1, 1, channel_array);
adc_start_conversion_direct(ADC1);
while (!adc_eoc(ADC1));
uint16_t reg16 = adc_read_regular(ADC1);
return reg16;
}
/**
* NOTE this is a state machine, but it expects to run often enough for millis()
* @param machine
* @param res
*/
void jack_run_task(volatile struct jacks_machine_t *machine, struct jacks_result_t *res)
{
res->ready = false;
if (!jack_connected(machine->jack)) {
return;
}
switch (machine->step) {
case jack_machine_step_off:
// is it time to do a reading yet?
if (millis() - 3000 > machine->last_read_millis) {
printf("switching power on: channel %u\n", (unsigned int) machine->jack->val_channel);
gpio_set(machine->jack->power_port, machine->jack->power_pin);
machine->step = jack_machine_step_powered;
machine->step_entry_millis = millis();
}
break;
case jack_machine_step_powered:
// have we been powered up long enough yet?
if (millis() - machine->jack->power_on_time_millis > machine->step_entry_millis) {
printf("power stable!\n");
machine->step = jack_machine_step_ready;
// not really necessary... machine->step_entry_millis = millis();
} else {
printf(".");
}
break;
case jack_machine_step_ready:
// TODO - this should actually start a dma sequence and go to a next step
// that decimates/averages and finally returns.
// ok! do a few readings and call it good
adc_disable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
//adc_set_single_channel(ADC1, machine->jack->val_channel);
adc_set_regular_sequence(ADC1, 1, (u8*)&(machine->jack->val_channel));
adc_enable_external_trigger_regular(ADC1, ADC_CR2_EXTSEL_SWSTART);
adc_start_conversion_regular(ADC1);
printf("ok, doing reading on channel!\n");
while(!adc_eoc(ADC1)) {
;
}
res->ready = true;
res->value = adc_read_regular(ADC1);
machine->last_value = res->value;
machine->last_read_millis = millis();
gpio_clear(machine->jack->power_port, machine->jack->power_pin);
machine->step = jack_machine_step_off;
break;
}
return;
}
float voltage_measure (uint32_t adc,uint8_t channel)
{
uint8_t channels[16];
float voltage;
channels[0] = channel;
adc_set_regular_sequence(adc, 1, channels);
adc_start_conversion_regular(adc);
gpio_toggle (GPIOD,GPIO15);
while (!adc_eoc(adc));
voltage=adc_read_regular(adc)*(VREF/ADC_CONVERSION_FACTOR);
return voltage;
}
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);
}
uint16_t adc_read(uint8_t ch)
{
while (!(ADC_SR(ADC1) & ADC_SR_EOC));
uint16_t last_res = ADC_DR(ADC1);
/* Select the channel we want to convert. 16=temperature_sensor. */
uint8_t channel_array[16];
channel_array[0] = ch;
adc_set_regular_sequence(ADC1, 1, channel_array);
/* Start the conversion directly (not trigger mode). */
adc_start_conversion_direct(ADC1);
return last_res;
}
int main(void)
{
u8 channel_array[16];
u16 temperature;
rcc_clock_setup_in_hse_16mhz_out_72mhz();
gpio_setup();
usart_setup();
adc_setup();
gpio_clear(GPIOB, GPIO7); /* LED1 on */
gpio_set(GPIOB, GPIO6); /* LED2 off */
/* Send a message on USART1. */
usart_send(USART1, 's');
usart_send(USART1, 't');
usart_send(USART1, 'm');
usart_send(USART1, '\r');
usart_send(USART1, '\n');
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 16;
adc_set_regular_sequence(ADC1, 1, channel_array);
/*
* If the ADC_CR2_ON bit is already set -> setting it another time
* starts the conversion.
*/
adc_on(ADC1);
/* Wait for end of conversion. */
while (!(ADC_SR(ADC1) & ADC_SR_EOC));
temperature = ADC_DR(ADC1);
/*
* That's actually not the real temperature - you have to compute it
* as described in the datasheet.
*/
my_usart_print_int(USART1, temperature);
gpio_clear(GPIOB, GPIO6); /* LED2 on */
while(1); /* Halt. */
return 0;
}
int main(void)
{
uint8_t channel_array[16];
uint16_t temperature;
rcc_clock_setup_in_hse_16mhz_out_72mhz();
gpio_setup();
usart_setup();
adc_setup();
gpio_clear(GPIOB, GPIO7); /* LED1 on */
gpio_set(GPIOB, GPIO6); /* LED2 off */
/* Send a message on USART1. */
usart_send(USART1, 's');
usart_send(USART1, 't');
usart_send(USART1, 'm');
usart_send(USART1, '\r');
usart_send(USART1, '\n');
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 16;
adc_set_regular_sequence(ADC1, 1, channel_array);
/*
* Start the conversion directly (not trigger mode).
*/
adc_start_conversion_direct(ADC1);
/* Wait for end of conversion. */
while (!(ADC_SR(ADC1) & ADC_SR_EOC));
temperature = ADC_DR(ADC1);
/*
* That's actually not the real temperature - you have to compute it
* as described in the datasheet.
*/
my_usart_print_int(USART1, temperature);
gpio_clear(GPIOB, GPIO6); /* LED2 on */
while(1); /* Halt. */
return 0;
}
/*--------------------------------------------------------------------*/
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);
}
batt_state adc_testBatt(void){
u8 channel_array[16];
u16 val,valLoaded;
gpio_set(GPIOA, GPIO5);
delay_ms(25);
/* Select the channel we want to convert. 16=temperature_sensor. */
channel_array[0] = 6;
adc_set_regular_sequence(ADC1, 1, channel_array);
/*
* Start the conversion directly (not trigger mode).
*/
adc_start_conversion_direct(ADC1);
/* Wait for end of conversion. */
while (!(ADC_SR(ADC1) & ADC_SR_EOC));
val = ADC_DR(ADC1);
if(val < 0x0A3D){
return BATTCRIT;
}
val = val & 0xFFFC;
gpio_set(GPIOA, GPIO1);
delay_ms(25);
adc_start_conversion_direct(ADC1);
/* Wait for end of conversion. */
while (!(ADC_SR(ADC1) & ADC_SR_EOC));
valLoaded = ADC_DR(ADC1);
gpio_clear(GPIOA, GPIO5 | GPIO1);
valLoaded = valLoaded & 0xFFFC;
// kontroluje pokles vetsi nez 0,75 V po zatizeni 15 Ohm
if(val - valLoaded > 0x1E0){
return BATTLOW;
}
return BATTOK;
}
static void platform_init_adc() {
/* Set up DMA for the ADC */
nvic_enable_irq(NVIC_DMA2_STREAM0_IRQ);
nvic_set_priority(NVIC_DMA2_STREAM0_IRQ, 64);
/* Set up ADC */
for (int i = 0; i < NUM_SENSORS; ++i) {
if (config.sensors[i].method == SENSOR_ADC) {
adc_pins[i] = config.sensors[i].pin;
gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, (1<<adc_pins[i]));
}
}
adc_off(ADC1);
adc_enable_scan_mode(ADC1);
adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR_SMP_15CYC);
adc_power_on(ADC1);
adc_disable_dma(ADC1);
adc_enable_dma(ADC1);
adc_clear_overrun_flag(ADC1);
adc_set_dma_continue(ADC1);
dma_stream_reset(DMA2, DMA_STREAM0);
dma_set_priority(DMA2, DMA_STREAM0, DMA_SxCR_PL_HIGH);
dma_set_memory_size(DMA2, DMA_STREAM0, DMA_SxCR_MSIZE_16BIT);
dma_set_peripheral_size(DMA2, DMA_STREAM0, DMA_SxCR_PSIZE_16BIT);
dma_enable_memory_increment_mode(DMA2, DMA_STREAM0);
dma_set_transfer_mode(DMA2, DMA_STREAM0, DMA_SxCR_DIR_PERIPHERAL_TO_MEM);
dma_enable_circular_mode(DMA2, DMA_STREAM0);
dma_set_peripheral_address(DMA2, DMA_STREAM0, (uint32_t) &ADC1_DR);
dma_set_memory_address(DMA2, DMA_STREAM0, (uint32_t) adc_dma_buf);
dma_set_number_of_data(DMA2, DMA_STREAM0, NUM_SENSORS);
dma_enable_transfer_complete_interrupt(DMA2, DMA_STREAM0);
dma_channel_select(DMA2, DMA_STREAM0, DMA_SxCR_CHSEL_0);
dma_enable_stream(DMA2, DMA_STREAM0);
adc_set_regular_sequence(ADC1, NUM_SENSORS, adc_pins);
}
static void setup_stm32f1_peripherals(void)
{
rcc_peripheral_enable_clock(&RCC_APB1ENR,
RCC_APB1ENR_I2C1EN);
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_ADC1EN);
/* GPIO pin for I2C1 SCL, SDA */
/* VESNA v1.0
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, GPIO6);
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, GPIO7);
*/
/* VESNA v1.1 */
AFIO_MAPR |= AFIO_MAPR_I2C1_REMAP;
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, TDA_PIN_SCL);
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, TDA_PIN_SDA);
/* GPIO pin for TDA18219 IRQ */
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, TDA_PIN_IRQ);
/* GPIO pin for TDA18219 IF AGC */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, TDA_PIN_IF_AGC);
/* Set to lowest gain for now */
gpio_clear(GPIOA, TDA_PIN_IF_AGC);
/* GPIO pin for AD8307 ENB */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, TDA_PIN_ENB);
/* ADC pin for AD8307 output */
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_ANALOG, TDA_PIN_OUT);
/* Setup I2C */
i2c_peripheral_disable(I2C1);
/* 400 kHz - I2C Fast Mode */
i2c_set_clock_frequency(I2C1, I2C_CR2_FREQ_24MHZ);
i2c_set_fast_mode(I2C1);
/* 400 kHz */
i2c_set_ccr(I2C1, 0x14);
/* 300 ns rise time */
i2c_set_trise(I2C1, 0x08);
i2c_peripheral_enable(I2C1);
/* Make sure the ADC doesn't run during config. */
adc_off(ADC1);
/* We configure everything for one single conversion. */
adc_disable_scan_mode(ADC1);
adc_set_single_conversion_mode(ADC1);
adc_enable_discontinous_mode_regular(ADC1);
adc_disable_external_trigger_regular(ADC1);
adc_set_right_aligned(ADC1);
adc_set_conversion_time_on_all_channels(ADC1, ADC_SMPR_SMP_28DOT5CYC);
adc_on(ADC1);
/* Wait for ADC starting up. */
int i;
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("nop");
adc_reset_calibration(ADC1);
adc_calibration(ADC1);
uint8_t channel_array[16];
/* Select the channel we want to convert. */
if(TDA_PIN_OUT == GPIO0) {
channel_array[0] = 0;
} else if(TDA_PIN_OUT == GPIO2) {
channel_array[0] = 2;
}
adc_set_regular_sequence(ADC1, 1, channel_array);
}