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fix adc/dac funciton error on edu-arm32 baord

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This commit is contained in:
Liu_Weichao
2023-08-09 15:10:11 +08:00
parent 8c1ad40f81
commit 5f642507b4
8 changed files with 546 additions and 293 deletions
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APP_Framework/Applications/app_test/test_adc.c
+7 -10
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@@ -26,9 +26,8 @@
void TestAdc(void)
{
int adc_fd;
uint8 adc_channel = 0x0;
uint16 adc_sample, adc_value_decimal = 0;
float adc_value;
uint8 adc_channel = 0x1;
uint16 adc_sample = 0;
adc_fd = PrivOpen(ADC_DEV_DRIVER, O_RDWR);
if (adc_fd < 0) {
@@ -45,13 +44,11 @@ void TestAdc(void)
return;
}
PrivRead(adc_fd, &adc_sample, 2);
adc_value = (float)adc_sample * (3.3 / 4096);
adc_value_decimal = (adc_value - (uint16)adc_value) * 1000;
printf("adc sample %u value integer %u decimal %u\n", adc_sample, (uint16)adc_value, adc_value_decimal);
for (int i = 0; i < 10; i ++) {
PrivRead(adc_fd, &adc_sample, 2);
printf("adc sample %u mv\n", adc_sample);
PrivTaskDelay(500);
}
PrivClose(adc_fd);