kaspar/RIOT
1
0
Fork 0
mirror of https://github.com/RIOT-OS/RIOT.git synced 2025-12-30 08:51:19 +01:00
Code Releases Activity

cpu/stm32f1/periph_adc: Reduce power consumption

Browse Source
This commit is contained in:
Hoernchen20 2020-04-18 17:17:36 +02:00
parent 4e87682ba1
commit 11618d32c0
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
cpu/stm32f1/periph/adc.c
View File

@ -58,6 +58,9 @@ static inline void prep(adc_t line)
mutex_lock(&locks[adc_config[line].dev]);
periph_clk_en(APB2, (RCC_APB2ENR_ADC1EN << adc_config[line].dev));
/* enable the ADC module */
dev(line)->CR2 |= ADC_CR2_ADON;
/* check if this channel is an internal ADC channel, if so
* enable the internal temperature and Vref */
if (adc_config[line].chan == 16 || adc_config[line].chan == 17) {
@ -67,11 +70,11 @@ static inline void prep(adc_t line)
static inline void done(adc_t line)
{
/* check if this channel is an internal ADC channel, if so
* disable the internal temperature and Vref */
if (adc_config[line].chan == 16 || adc_config[line].chan == 17) {
dev(line)->CR2 &= ~ADC_CR2_TSVREFE;
}
/* disable the internal temperature and Vref */
dev(line)->CR2 &= ~ADC_CR2_TSVREFE;
/* disable the ADC module */
dev(line)->CR2 &= ~ADC_CR2_ADON;
periph_clk_dis(APB2, (RCC_APB2ENR_ADC1EN << adc_config[line].dev));
mutex_unlock(&locks[adc_config[line].dev]);
@ -102,9 +105,6 @@ int adc_init(adc_t line)
RCC->CFGR &= ~(RCC_CFGR_ADCPRE);
RCC->CFGR |= ((clk_div / 2) - 1) << 14;
/* enable the ADC module */
dev(line)->CR2 |= ADC_CR2_ADON;
/* resets the selected ADC calibration registers */
dev(line)->CR2 |= ADC_CR2_RSTCAL;
/* check the status of RSTCAL bit */