bl_mcu_sdk/examples/peripherals/adc/adc_vbat/main.c
jzlv d6fab307bf [update] update lhal, soc and demos
* Add flash driver and init in boards.
* Add timeout for all poll wait apis
* Add 808 d0 startup to bringup
* Update lhal device tables
* Update demos
2022-11-18 16:30:00 +08:00

47 lines
1.1 KiB
C

#include "bflb_adc.h"
#include "bflb_mtimer.h"
#include "board.h"
struct bflb_device_s *adc;
int main(void)
{
board_init();
adc = bflb_device_get_by_name("adc");
/* adc clock = XCLK / 2 / 32 */
struct bflb_adc_config_s cfg;
cfg.clk_div = ADC_CLK_DIV_32;
cfg.scan_conv_mode = false;
cfg.continuous_conv_mode = false;
cfg.differential_mode = false;
cfg.resolution = ADC_RESOLUTION_16B;
cfg.vref = ADC_VREF_3P2V;
struct bflb_adc_channel_s chan;
chan.pos_chan = ADC_CHANNEL_VABT_HALF;
chan.neg_chan = ADC_CHANNEL_GND;
bflb_adc_init(adc, &cfg);
bflb_adc_channel_config(adc, &chan, 1);
bflb_adc_vbat_enable(adc);
struct bflb_adc_result_s result;
for (uint16_t i = 0; i < 10; i++) {
bflb_adc_start_conversion(adc);
while (bflb_adc_get_count(adc) == 0) {
bflb_mtimer_delay_ms(1);
}
uint32_t raw_data = bflb_adc_read_raw(adc);
bflb_adc_parse_result(adc, &raw_data, &result, 1);
printf("vBat = %d mV\r\n", (uint32_t)(result.millivolt * 2));
bflb_adc_stop_conversion(adc);
bflb_mtimer_delay_ms(500);
}
while (1) {
}
}