Diff: ADC.c

Revision:

0:7088bc4c9949

diff -r 000000000000 -r 7088bc4c9949 ADC.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ADC.c	Thu May 31 19:30:01 2018 +0000
@@ -0,0 +1,24 @@
+#include "ADC.h"
+
+
+
+void init_ADC(void)
+{
+    RCC->AHB1ENR|=RCC_AHB1ENR_GPIOCEN;  //GPIOC clock enable
+    ADC_input_port->MODER|=(3u<<(2*ADC_input_pin)); //ADC input pin is analogue mode
+    
+    RCC->APB2ENR|=RCC_APB2ENR_ADC1EN;       //ADC clock enable
+    ADC1->SQR1&=~ADC_SQR1_L;                        //set number of conversions per sequence to 1
+    ADC1->SQR3&=~ADC_SQR3_SQ1;                  //clear channel select bits
+    ADC1->SQR3|=ADC_Channel;                        //set channel
+    ADC1->CR2|=ADC_CR2_ADON;                        //enable ADC
+    
+}
+
+
+unsigned short read_adc(void)
+{
+    ADC1->CR2|=ADC_CR2_SWSTART;         //start ADC conversion
+    while((ADC1->SR&ADC_SR_EOC)==0);    //wait for ADC conversion complete
+    return ADC1->DR;                    //return converted value
+}
\ No newline at end of file