Jared Baxter
/
Impedance_Fast_Circuitry_print_V_I
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Fork of
Impedance_Fast_Circuitry
by 
Jared Baxter
Diff: adc.cpp
- Revision:
- 48:29f14bc30ba6
- Parent:
- 47:54fafe151669
- Child:
- 49:4dcf4717a8bb
diff -r 54fafe151669 -r 29f14bc30ba6 adc.cpp
--- a/adc.cpp Sat Jan 31 16:44:40 2015 +0000
+++ b/adc.cpp Sat Jan 31 18:38:17 2015 +0000
@@ -2,7 +2,7 @@
/*
TODO: remove interrupt handlers
- add calibration
+ finish calibration
change clock speed
Possible causes of the triggering problem:
@@ -30,8 +30,9 @@
SIM_SCGC3 |= SIM_SCGC3_ADC1_MASK;
// Set ADC hardware trigger to PDB0
- SIM_SOPT7 = SIM_SOPT7_ADC0TRGSEL(0);
- SIM_SOPT7 = SIM_SOPT7_ADC1TRGSEL(0);
+ SIM_SOPT7 = SIM_SOPT7_ADC0TRGSEL(0); // Select triggering by PDB and select pre-trigger A
+ SIM_SOPT7 = SIM_SOPT7_ADC1TRGSEL(0); // Select triggering by PDB and select pre-trigger A
+ debug.printf("SIM_SOPT7: 0x%08x\r\n",SIM_SOPT7); //(0x00000000)
// Setup Configuration Register 1
ADC0_CFG1 = 0; // clear register
@@ -111,17 +112,17 @@
ADC1_SC2 |= ADC_SC2_ADTRG_MASK; // select hardware trigger now that calibration is complete
// Setup Status and Control Register 1A
- ADC0_SC1A = 0; // clear register
- ADC0_SC1A &= ~ADC_SC1_DIFF_MASK; // select single-ended mode
- ADC0_SC1A |= ADC_SC1_AIEN_MASK; // enable interrupt (for debugging)
- ADC0_SC1A |= ADC_SC1_ADCH(13); // select channel 13
+ ADC0_SC1B = 0; // clear register
+ ADC0_SC1B &= ~ADC_SC1_DIFF_MASK; // select single-ended mode
+ ADC0_SC1B |= ADC_SC1_AIEN_MASK; // enable interrupt (for debugging)
+ ADC0_SC1B |= ADC_SC1_ADCH(13); // select channel 13
ADC1_SC1A = 0; // clear register
ADC1_SC1A &= ~ADC_SC1_DIFF_MASK; // select single-ended mode
ADC1_SC1A |= ADC_SC1_AIEN_MASK; // enable interrupt (for debugging)
ADC1_SC1A |= ADC_SC1_ADCH(13); // select channel 13
// Check if ADC is finished initializing TODO: This part doesn't seem right, but I did it according to 871
- while( (ADC0_SC1A&ADC_SC1_COCO_MASK)) {}
+ while( (ADC0_SC1B&ADC_SC1_COCO_MASK)) {}
gain = ADC0_RA; // read the register to clear SC1A[COCO]
while( (ADC1_SC1A&ADC_SC1_COCO_MASK)) {}
gain = ADC1_RA; // read the register to clear SC1A[COCO]