diff options
Diffstat (limited to 'tests/adc-power')
| -rw-r--r-- | tests/adc-power/README.md | 5 | ||||
| -rw-r--r-- | tests/adc-power/adc-power.c | 14 | ||||
| -rw-r--r-- | tests/adc-power/main-stm32f3-disco.c | 6 |
3 files changed, 15 insertions, 10 deletions
diff --git a/tests/adc-power/README.md b/tests/adc-power/README.md index 7dbbe8a..7da8ad7 100644 --- a/tests/adc-power/README.md +++ b/tests/adc-power/README.md @@ -1,3 +1,8 @@ + +For most boards, adc channels 1 and 5 are PA1 and PA5. + +Not the F3. oh no, that board is cray cray. PA0 and PF4 + https://github.com/libopencm3/libopencm3/pull/471 https://github.com/libopencm3/libopencm3/pull/457 https://github.com/libopencm3/libopencm3/pull/534 diff --git a/tests/adc-power/adc-power.c b/tests/adc-power/adc-power.c index 4b591a6..db72a8e 100644 --- a/tests/adc-power/adc-power.c +++ b/tests/adc-power/adc-power.c @@ -21,10 +21,12 @@ // Still have some bad shit to deal with... #if defined(STM32F3) -#define SAMPLE_TIME_BASIC ADC_SMPR1_SMP_19DOT5CYC +#define SAMPLE_TIME_BASIC ADC_SMPR1_SMP_181DOT5CYC +#define SAMPLE_TIME_TEMP ADC_SMPR1_SMP_601DOT5CYC // 2.2usecs or more +#define SAMPLE_TIME_VREF SAMPLE_TIME_TEMP #elif defined(STM32F4) #define SAMPLE_TIME_BASIC ADC_SMPR_SMP_28CYC -#define SAMPLE_TIME_TEMP ADC_SMPR_SMP_144CYC +#define SAMPLE_TIME_TEMP ADC_SMPR_SMP_144CYC // 10 usecs or more, in theory needs 840cycles! #define SAMPLE_TIME_VREF SAMPLE_TIME_TEMP #define ADC_CHANNEL_TEMP ADC_CHANNEL_TEMP_F40 #define SEPARATE_VREF 0 @@ -50,13 +52,8 @@ void adc_power_init(void) rcc_periph_clock_enable(RCC_ADC12); rcc_adc_prescale(RCC_CFGR2_ADCxPRES_PLL_CLK_DIV_1, RCC_CFGR2_ADCxPRES_PLL_CLK_DIV_1); adc_enable_regulator(ADC1); - adc_set_sample_time_on_all_channels(ADC1, ADC_SMPR1_SMP_19DOT5CYC); #else rcc_periph_clock_enable(RCC_ADC1); - adc_set_sample_time_on_all_channels(ADC1, SAMPLE_TIME_BASIC); - adc_set_sample_time(ADC1, ADC_CHANNEL_TEMP, SAMPLE_TIME_TEMP); - adc_set_sample_time(ADC1, ADC_CHANNEL_TEMP, SAMPLE_TIME_VREF); - #if 0 // DANGER DANGER! doing this without DMA is dum. // but... we're busy polling, we should be right... right? @@ -68,6 +65,9 @@ void adc_power_init(void) #endif #endif + adc_set_sample_time_on_all_channels(ADC1, SAMPLE_TIME_BASIC); + adc_set_sample_time(ADC1, ADC_CHANNEL_TEMP, SAMPLE_TIME_TEMP); + adc_set_sample_time(ADC1, ADC_CHANNEL_TEMP, SAMPLE_TIME_VREF); adc_enable_temperature_sensor(); #if (SEPARATE_VREF == 1) adc_enable_vrefint(); diff --git a/tests/adc-power/main-stm32f3-disco.c b/tests/adc-power/main-stm32f3-disco.c index 277ca17..6ce40a8 100644 --- a/tests/adc-power/main-stm32f3-disco.c +++ b/tests/adc-power/main-stm32f3-disco.c @@ -102,8 +102,8 @@ int main(void) printf("hi guys!\n"); 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); + gpio_mode_setup(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, GPIO5); adc_power_init(); for (i = 0; i < 0x1000; i++) { /* need as much as 10 usecs for vreg */ @@ -113,13 +113,13 @@ int main(void) adc_power_task_up(); gpio_toggle(GPIOE, GPIO8); - for (i = 0; i < 0x800000; i++) { /* Wait a bit. */ + for (i = 0; i < 0x100000; i++) { /* Wait a bit. */ __asm__("NOP"); } printf("tick...\n"); adc_power_task_down(); gpio_toggle(GPIOE, GPIO8); - for (i = 0; i < 0x800000; i++) { /* Wait a bit. */ + for (i = 0; i < 0x100000; i++) { /* Wait a bit. */ __asm__("NOP"); } } |