X-Git-Url: https://git.karo-electronics.de/?p=oswald.git;a=blobdiff_plain;f=metawatch%2Fmw_adc.c;h=52c9e04ae401cdff5fa0810d1767212456f4f8f0;hp=48501268cde35db8812f3621102dabb36a04bfc2;hb=3e320aaa4175a0ed469581f1dea2eac35b390878;hpb=ac20c9d8b06609636166c7f3fa38f97561a21af6

diff --git a/metawatch/mw_adc.c b/metawatch/mw_adc.c
index 4850126..52c9e04 100644
--- a/metawatch/mw_adc.c
+++ b/metawatch/mw_adc.c
@@ -58,17 +58,18 @@ unsigned int mw_get_battery_adc_val(void)
 	ENABLE_ADC();
 
 	/* WaitForAdcBusy(); */
-	while (ADC12CTL1 & ADC12BUSY);
+	while (ADC12CTL1 & ADC12BUSY)
+		nop();
 
-	/* Convert the ADC count for the battery input into a voltage 
+	/* Convert the ADC count for the battery input into a voltage
 	 * ADC12MEM1: Counts Battery Voltage in ADC counts
 	 * Result: Battery voltage in millivolts */
 	BATTERY_SENSE_DISABLE();
 
-	return (unsigned int)(CONVERSION_FACTOR_BATTERY * (double)ADC12MEM1);  
+	return (unsigned int)(CONVERSION_FACTOR_BATTERY * (double)ADC12MEM1);
 }
 
-unsigned char mw_get_battery_percentage_from_val(unsigned int BattVal)
+uint8_t mw_get_battery_percentage_from_val(unsigned int BattVal)
 {
 	if (BattVal > BATTERY_FULL_LEVEL)
 		BattVal = BATTERY_FULL_LEVEL;
@@ -81,3 +82,20 @@ unsigned char mw_get_battery_percentage_from_val(unsigned int BattVal)
 	return (unsigned char)BattVal;
 }
 
+unsigned int mw_get_amblight_adc_val(void)
+{ 
+	LIGHT_SENSE_ENABLE();
+
+	CLEAR_START_ADDR();
+	ADC12CTL1 |= ADC12CSTARTADD_2;
+	ENABLE_ADC();
+
+	/* WaitForAdcBusy(); */
+	while (ADC12CTL1 & ADC12BUSY)
+		nop();
+
+	LIGHT_SENSE_DISABLE();
+
+	return ADC12MEM2;
+}
+