Diff: Drivers/adc.c

Revision:

0:fac116e94d44

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Drivers/adc.c	Tue Jan 05 11:47:35 2016 +0000
@@ -0,0 +1,81 @@
+/*
+ * adc.c
+ *
+ *  Created on: 02/07/2011
+ *      Author: francisco
+ */
+
+#include <LPC17xx.h>
+#include "adc.h"
+
+void init_adc(int adc_clk)
+{
+    // Turn on power to ADC block
+    LPC_SC->PCONP |=  PCADC;
+
+    // Turn on ADC peripheral clock
+        LPC_SC->PCLKSEL0 &= ~(3 << PCLK_ADC);
+        LPC_SC->PCLKSEL0 |=  (ADC_CCLK << PCLK_ADC);    //CLK/8
+
+        unsigned int clkdiv = (SystemCoreClock/1)/65;
+        clkdiv = clkdiv/adc_clk;
+
+        LPC_ADC->ADCR &= ~(ADC_OPERATIONAL|ADC_CLKDIV(255));
+        LPC_ADC->ADCR |= (ADC_OPERATIONAL|ADC_CLKDIV(clkdiv));
+
+    //NVIC_EnableIRQ(ADC_IRQn);
+}
+
+void setup_start(int mode,int edge)
+{
+    LPC_ADC->ADCR |= mode;
+}
+
+void select_channels(int adc_ch)
+{
+    LPC_ADC->ADCR &= ~(ADC_CH_0|ADC_CH_1|ADC_CH_2|ADC_CH_3|ADC_CH_4|ADC_CH_5|ADC_CH_6|ADC_CH_7);
+    LPC_ADC->ADCR |= adc_ch;
+
+    LPC_ADC->ADINTEN |= (1U<<8);//adc_ch;
+
+    if(adc_ch&ADC_CH_0)
+    {
+        LPC_PINCON->PINSEL1 |= 1U<<14;
+        LPC_PINCON->PINMODE1 |= 2U<<14;
+    }
+    if(adc_ch&ADC_CH_1)
+    {
+        LPC_PINCON->PINSEL1 |= 1U<<16;
+        LPC_PINCON->PINMODE1 |= 2U<<16;
+    }
+    if(adc_ch&ADC_CH_2)
+    {
+        LPC_PINCON->PINSEL1 |= 1U<<18;
+        LPC_PINCON->PINMODE1 |= 2U<<18;
+    }
+    if(adc_ch&ADC_CH_3)
+    {
+        LPC_PINCON->PINSEL1 |= 1U<<20;
+        LPC_PINCON->PINMODE1 |= 2U<<20;
+    }
+    if(adc_ch&ADC_CH_4)
+    {
+        LPC_PINCON->PINSEL3 |= 3U<<28;
+        LPC_PINCON->PINMODE3 |= 2U<<28;
+    }
+    if(adc_ch&ADC_CH_5)
+    {
+        LPC_PINCON->PINSEL3 |= 3U<<30;
+        LPC_PINCON->PINMODE3 |= 2U<<30;
+    }
+    if(adc_ch&ADC_CH_6)
+    {
+        LPC_PINCON->PINSEL0 |= 2U<<6;
+        LPC_PINCON->PINMODE0 |= 2U<<6;
+    }
+    if(adc_ch&ADC_CH_7)
+    {
+        LPC_PINCON->PINSEL0 |= 2U<<4;
+        LPC_PINCON->PINMODE0 |= 2U<<4;
+    }
+}