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| author | Ankit Raj | 2017-06-21 10:26:59 +0530 |
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| committer | Ankit Raj | 2017-06-21 10:26:59 +0530 |
| commit | 958577cac90a99124cd673fde1926781d966d91f (patch) | |
| tree | 134d9fe7f5b97a647cb055bb7b4c21820a749f49 /src/c/hardware/avr/adc/u8AVRADCSetups.c | |
| download | scilab2c-958577cac90a99124cd673fde1926781d966d91f.tar.gz scilab2c-958577cac90a99124cd673fde1926781d966d91f.tar.bz2 scilab2c-958577cac90a99124cd673fde1926781d966d91f.zip | |
Updated Scilab2C
Diffstat (limited to 'src/c/hardware/avr/adc/u8AVRADCSetups.c')
| -rw-r--r-- | src/c/hardware/avr/adc/u8AVRADCSetups.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/c/hardware/avr/adc/u8AVRADCSetups.c b/src/c/hardware/avr/adc/u8AVRADCSetups.c new file mode 100644 index 00000000..66f491b2 --- /dev/null +++ b/src/c/hardware/avr/adc/u8AVRADCSetups.c @@ -0,0 +1,43 @@ +// Function to initialise ADC of AVR +// +// Calling Sequence +// AVRSetupADC(uint8 prescaler, uint8 adc_ref) +// +// Parameters +// prescaler: prescaler to be used for generating ADC clock (0-7) +// adc_ref : reference voltage to be used for ADC conversion +// 0 -> Voltage on VREF pin +// 1 -> Voltage on AVCC pin +// 2 -> Internal 2.56 reference voltage +// +// Description +// This function initialises ADc of AVR with given parameters. 'prescaler' is +// needed for deciding ADC clock. ADC clock should be between 50KHz and 200KHz +// and it given as (MCU clock/2^prescaler). Select appropriate prescaler depending +// on MCU clock. 'adc_ref' selects one of the available reference voltage sources +// available +// Examples +// AVRADCSetup(128,0) +// +// Authors +// Siddhesh Wani +// Ashish Kamble + +#include "AVRPeripheralADC.h" + + +uint8 u8AVRADCSetups(uint8 prescaler, uint8 adc_ref) +{ +/*Set the prescaler value*/ + ADCSRA |= (prescaler & 0x07); + + /*Set the adc reference voltage*/ + ADMUX |= ((adc_ref & 0x03) << 6); + + /*Enable ADC hardware. Set ADEN bit*/ +ADCSRA |= (1<<7); + +return 0; +} + + |