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;
}
void adc1_2_isr(void) {
//usbd_ep_write_packet(usb_device,0x82, x, 4);
if ( adc_eoc(ADC1) != 0 ) {
gpio_port_write(GPIOE, 0xFF00);
//usbd_ep_write_packet(usb_device,0x82, (uint8_t *) &(adc_samples[0]), 64);
// reset DMA so we're ready to transmit again
}
}
/**
* 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;
}
void adc1_2_isr(void) {
if ( adc_eoc(ADC1) != 0 ) {
sig = adc_read_regular(ADC1);
gpio_port_write(GPIOE, (sig << 8) | 0x0001);
DAC_DHR8R1 = DAC_DHR8R1_DACC1DHR_MSK & sig;
//DAC_DHR12R1 = DAC_DHR12R1_DACC1DHR_MSK & 0x0FFF;
ADC1_CR |= ADC_CR_ADSTART;
}
}
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;
}
int main(void)
{
uint16_t temp;
clock_setup();
gpio_setup();
adc_setup();
usart_setup();
while (1) {
adc_start_conversion_regular(ADC1);
while (!(adc_eoc(ADC1)));
temp=adc_read_regular(ADC1);
gpio_port_write(GPIOE, temp << 4);
my_usart_print_int(USART2, temp);
}
return 0;
}
int main(void)
{
uint16_t temp;
adc_setup();
usart_setup();
while (1) {
adc_start_conversion_regular(ADC1);
while (!(adc_eoc(ADC1)));
temp = adc_read_regular(ADC1);
my_usart_print_int(USART1, temp);
int i;
for (i = 0; i < 800000; i++) { /* Wait a bit. */
__asm__("nop");
}
}
return 0;
}
uint16_t battery_sense_read() {
adc_start_conversion_regular(BAT_SENSE_ADC);
while (!adc_eoc(BAT_SENSE_ADC));
return adc_read_regular(BAT_SENSE_ADC);
}
