Analog to digital conversion. More...

Files
file	ADC.h
	Initialize 12-bit ADC0 and/or ADC1.

file	ADCTimer.h
	Initialize 12-bit ADC0.

Macros
#define	ADCVREF_INT 0x200
	using ADCVREF_INT means choose internal 2.5V reference for accuracy

#define	ADCVREF_EXT 0x100
	using ADCVREF_EXT means choose external reference not tested

#define	ADCVREF_VDDA 0x000
	using ADCVREF_VDDA means choose power line 3.3V reference for 0 to 3.3V range

#define	ADCVREF_INT 0x200
	using ADCVREF_INT means choose internal 2.5V reference for accuracy

#define	ADCVREF_EXT 0x100
	using ADCVREF_EXT means choose external reference not tested

#define	ADCVREF_VDDA 0x000
	using ADCVREF_VDDA means choose power line 3.3V reference for 0 to 3.3V range. This is the mode we use in ECE319K

Functions
void	ADC0_Init (uint32_t channel, uint32_t reference)
	Initialize 12-bit ADC0. More...

uint32_t	ADC0_In (void)
	Trigger ADC measurement and wait for result. More...

void	ADC1_Init (uint32_t channel, uint32_t reference)
	Initialize 12-bit ADC0. More...

uint32_t	ADC1_In (void)
	Trigger ADC measurement and wait for result. More...

void	ADC_Init (ADC12_Regs *adc12, uint32_t channel, uint32_t reference)
	Initialize 12-bit ADC0. More...

uint32_t	ADC_In (ADC12_Regs *adc12)
	Trigger ADC measurement and wait for result. More...

void	ADC_InitDual (ADC12_Regs *adc12, uint32_t channel1, uint32_t channel2, uint32_t reference)
	Initialize 12-bit ADC for two channels. More...

void	ADC_InDual (ADC12_Regs adc12, uint32_t d1, uint32_t *d2)
	Trigger two ADC measurements and wait for results. More...

void	ADC_InitTriple (ADC12_Regs *adc12, uint32_t channel1, uint32_t channel2, uint32_t channel3, uint32_t reference)
	Initialize 12-bit ADC for three channels. More...

void	ADC_InTriple (ADC12_Regs adc12, uint32_t d1, uint32_t d2, uint32_t d3)
	Trigger three ADC measurements and wait for results. More...

void	ADC0_InitAve (uint32_t channel, uint32_t n)
	Initialize 12-bit ADC0 for hardware averaging. More...

void	ADC0_TimerG0_Init (uint32_t channel, uint32_t reference, uint16_t period, uint32_t prescale, uint32_t priority)
	Initialize 12-bit ADC0. More...

void	ADC1_TimerG8_Init (uint32_t channel, uint32_t reference, uint16_t period, uint32_t prescale, uint32_t priority)
	Initialize 12-bit ADC1. More...

Detailed Description

Analog to digital conversion.

ADC pins on the MSPM0G3507
Pin	ADC channel	Sensor
PA27	ADC0 channel 0	J1.8 also MKII light interrupt
PA26	ADC0 channel 1	J1.6 MKII microphone in
PA25	ADC0 channel 2	J1.2 MKII Joystick X
PA24	ADC0 channel 3	J3.27 free
PB25	ADC0 channel 4	J19.7 (insert 0ohm R74, no U3 OPA2365)
PB24	ADC0 channel 5	J1.5 also MKII joystick select button
PB20	ADC0 channel 6	J4.36 free
PA22	ADC0 channel 7	J24 MKII Accelerometer Y
PA15	ADC1 channel 0	J3.30 (also DACout)
PA16	ADC1 channel 1	J3.29 free
PA17	ADC1 channel 2	J3.28 free
PA18	ADC1 channel 3	J3.26 MKII Joystick Y
PB17	ADC1 channel 4	J2.18 free
PB18	ADC1 channel 5	J3.25 MKII Accelerometer Z
PB19	ADC1 channel 6	J3.23 MKII Accelerometer X
PA21	ADC1 channel 7	J17.8 (insert R20, remove R3)

ADC pins on the MSPM0G3507
Pin	ADC channel	Sensor
PA27	ADC0 channel 0	J1.8 also MKII light interrupt
PA26	ADC0 channel 1	J1.6 MKII microphone in
PA25	ADC0 channel 2	J1.2 MKII Joystick X
PA24	ADC0 channel 3	J3.27 free
PB25	ADC0 channel 4	J19.7 (insert 0ohm R74, no U3 OPA2365)
PB24	ADC0 channel 5	J1.5 also MKII joystick select button
PB20	ADC0 channel 6	J4.36 free
PA22	ADC0 channel 7	J24 MKII Accelerometer Y

Function Documentation

◆ ADC0_In()

uint32_t ADC0_In ( void )

Trigger ADC measurement and wait for result.

Trigger a single ADC0 measurement, wait for it to complete, and return the 12-bit result as 0 to 4095. The ADC input voltage range is 0 to 3.3V. Busy-wait synchronization used.

Parameters

none

Returns: 12-bit result

Note: Assumes ADC0_Init has been called.

◆ ADC0_Init()

void ADC0_Init	(	uint32_t	channel,
		uint32_t	reference
	)

Initialize 12-bit ADC0.

Initialize 12-bit ADC0 in software-triggered mode to take measurements when the associated function is called. One channel is to be measured

Parameters

channel	is the 0 to 7
reference	is ADCVREF_INT, ADCVREF_EXT, ADCVREF_VDDA

Returns: none

◆ ADC0_InitAve()

void ADC0_InitAve	(	uint32_t	channel,
		uint32_t	n
	)

Initialize 12-bit ADC0 for hardware averaging.

Initialize 12-bit ADC0 in software-triggered mode to take measurements when the associated function is called. One channel is to be measured 2^n times in average.

Parameters

channel	is the 0 to 7
n	0 to 7

Returns: none

Note: uses ADCVREF_VDDA, so range is 0 to 3.3V

◆ ADC0_TimerG0_Init()

void ADC0_TimerG0_Init	(	uint32_t	channel,
		uint32_t	reference,
		uint16_t	period,
		uint32_t	prescale,
		uint32_t	priority
	)

Initialize 12-bit ADC0.

Initialize ADC0 for Timer G0 triggered sampling
Assuming 80 MHz bus, the sampling is 40MHz/period/prescale
Pin channel
PA27 0
PA26 1
PA25 2
PA24 3
PB25 4
PB24 5
PB20 6
PA22 7

Parameters

channel	is the 0 to 7
reference	is ADCVREF_INT, ADCVREF_EXT, ADCVREF_VDDA
period	is 16-bit period in bus cycles on Timer G0
prescale	is 8-bit prescale in bus cycles on Timer G0
priority	is 0 to 3 for ADC interrupts

Returns: none

Note: uses internal pub/sub channel 1

◆ ADC1_In()

uint32_t ADC1_In ( void )

Trigger ADC measurement and wait for result.

Trigger a single ADC1 measurement, wait for it to complete, and return the 12-bit result as 0 to 4095. The ADC input voltage range is 0 to 3.3V. Busy-wait synchronization used.

Parameters

none

Returns: 12-bit result

Note: Assumes ADC1_Init has been called.

◆ ADC1_Init()

void ADC1_Init	(	uint32_t	channel,
		uint32_t	reference
	)

Initialize 12-bit ADC0.

Initialize 12-bit ADC1 in software-triggered mode to take measurements when the associated function is called. One channel is to be measured

Parameters

channel	is the 0 to 7
reference	is ADCVREF_INT, ADCVREF_EXT, ADCVREF_VDDA

Returns: none

◆ ADC1_TimerG8_Init()

void ADC1_TimerG8_Init	(	uint32_t	channel,
		uint32_t	reference,
		uint16_t	period,
		uint32_t	prescale,
		uint32_t	priority
	)

Initialize 12-bit ADC1.

Initialize ADC1 for Timer G8 triggered sampling
Assuming 80 MHz bus, the sampling is 40MHz/period/prescale
Pin channel
PA15 0
PA16 1
PA17 2
PA18 3
PB17 4
PB18 5
PB19 6
PA21 7

Parameters

channel	is the 0 to 7
reference	is ADCVREF_INT, ADCVREF_EXT, ADCVREF_VDDA
period	is 16-bit period in bus cycles on Timer G8
prescale	is 8-bit prescale in bus cycles on Timer G8
priority	is 0 to 3 for ADC interrupts

Returns: none

Note: uses internal pub/sub channel 2

◆ ADC_In()

uint32_t ADC_In ( ADC12_Regs * adc12 )

Trigger ADC measurement and wait for result.

Trigger a single ADC0 or ADC1 measurement, wait for it to complete, and return the 12-bit result as 0 to 4095. The ADC input voltage range is 0 to 3.3V. Busy-wait synchronization used.

Parameters

adc12 is ADC0 or ADC1

Returns: 12-bit result

Note: Assumes ADC_Init has been called.

◆ ADC_InDual()

void ADC_InDual	(	ADC12_Regs *	adc12,
		uint32_t *	d1,
		uint32_t *	d2
	)

Trigger two ADC measurements and wait for results.

Trigger a dual ADC0 or ADC1 measurement, wait for it to complete, and return the two 12-bit results as 0 to 4095. The ADC input voltage range is 0 to 3.3V. Busy-wait synchronization used.

Parameters

adc12	is ADC0 or ADC1
*d1	address into which the first ADC sample will be stored
*d2	address into which the second ADC sample will be stored

Returns: none

Note: Assumes ADC_InitDual has been called.

◆ ADC_Init()

void ADC_Init	(	ADC12_Regs *	adc12,
		uint32_t	channel,
		uint32_t	reference
	)

Initialize 12-bit ADC0.

Initialize 12-bit ADC0 or ADC1 in software-triggered mode to take measurements when the associated function is called. One channel is to be measured

Parameters

adc12	is ADC0 or ADC1
channel	is the 0 to 7
reference	is ADCVREF_INT, ADCVREF_EXT, ADCVREF_VDDA

Returns: none

◆ ADC_InitDual()

void ADC_InitDual	(	ADC12_Regs *	adc12,
		uint32_t	channel1,
		uint32_t	channel2,
		uint32_t	reference
	)

Initialize 12-bit ADC for two channels.

Initialize 12-bit ADC0 or ADC1 in software-triggered mode to take measurements when the associated function is called. Two channels are to be measured

Parameters

adc12	is ADC0 or ADC1
channel1	is the 0 to 7
channel2	is the 0 to 7
reference	is ADCVREF_INT, ADCVREF_EXT, ADCVREF_VDDA

Returns: none

◆ ADC_InitTriple()

void ADC_InitTriple	(	ADC12_Regs *	adc12,
		uint32_t	channel1,
		uint32_t	channel2,
		uint32_t	channel3,
		uint32_t	reference
	)

Initialize 12-bit ADC for three channels.

Initialize 12-bit ADC0 or ADC1 in software-triggered mode to take measurements when the associated function is called. three channels are to be measured

Parameters

adc12	is ADC0 or ADC1
channel1	is the 0 to 7
channel2	is the 0 to 7
channel3	is the 0 to 7
reference	is ADCVREF_INT, ADCVREF_EXT, ADCVREF_VDDA

Returns: none

◆ ADC_InTriple()

void ADC_InTriple	(	ADC12_Regs *	adc12,
		uint32_t *	d1,
		uint32_t *	d2,
		uint32_t *	d3
	)

Trigger three ADC measurements and wait for results.

Trigger a triple ADC0 or ADC1 measurement, wait for it to complete, and return the three 12-bit results as 0 to 4095. The ADC input voltage range is 0 to 3.3V. Busy-wait synchronization used.

Parameters

adc12	is ADC0 or ADC1
*d1	address into which the first ADC sample will be stored
*d2	address into which the second ADC sample will be stored
*d3	address into which the third ADC sample will be stored

Returns: none

Note: Assumes ADC_InitTriple has been called.

Files

Macros

Functions

Detailed Description

Function Documentation

◆ ADC0_In()

◆ ADC0_Init()

◆ ADC0_InitAve()

◆ ADC0_TimerG0_Init()

◆ ADC1_In()

◆ ADC1_Init()

◆ ADC1_TimerG8_Init()

◆ ADC_In()

◆ ADC_InDual()

◆ ADC_Init()

◆ ADC_InitDual()

◆ ADC_InitTriple()

◆ ADC_InTriple()