Diff: fastADC.cpp

Revision:

0:56e4e76188d9

Child:

1:d415e0b7dc3e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fastADC.cpp	Wed Dec 04 10:41:22 2019 +0000
@@ -0,0 +1,20 @@
+#include "fastADC.h"
+#include "mbed.h"
+
+void initADC(){
+    GPIOA->MODER   |= (0x03 << 16);              /* Configure PB0 as ADC.8 input      */
+    ADC1->CR2        &= 1 << 1;              /* non continuous conversion       */
+    ADC1->SQR5       &= ~(0x1f);             /* clear ADC_IN8                     */
+    ADC1->SQR5       |= 0x08;                /* set ADC_IN8                     */
+    ADC1->CR2        &= ~(1 << 2);           /* Make sure to use bank A      */
+    ADC1->CR2        &= ~(3 << 24);          /* set resolution to 12 bits        */
+    ADC1->CR2        |= 1 << 0;             /* turn on ADC                   */
+    while(!(ADC1->SR & (1 << 6)));
+}
+
+uint16_t readADC(){
+    while(!(ADC1->SR & (1 << 6)));          /* Wait for ADC to be available */
+    ADC1->CR2 |= 1 << 30;                   /* Start new conversion               */ 
+    while(!(ADC1->SR & (1 << 1)));          /* If conversion has finished         */
+    return (uint16_t) ADC1->DR & 0xFFFF;    /* Read AD converted value            */
+}
\ No newline at end of file