ADCTimer.h File Reference

Initialize 12-bit ADC0. More...

#include <ti/devices/msp/msp.h>

Go to the source code of this file.

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. This is the mode we use in ECE319K

Functions
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

Initialize 12-bit ADC0.

ADC input, timer trigger, 12-bit conversion
The ADC allows two possible references: 2.5V or 3.3V.
The internal 2.5V reference is lower noise, but limits the range to 0 to 2.5V.
The other possibility is to use the analog voltage supply at 3.3V, making the ADC range 0 to 3.3V. In this driver, the 3.3V range is selected. There are several configurations (each with initialization and a read ADC with software trigger, busy-wait function)

Version

ECE319K v1.3

Author

Daniel Valvano and Jonathan Valvano

Copyright

Copyright 2025 by Jonathan W. Valvano, valva.nosp@m.no@m.nosp@m.ail.u.nosp@m.texa.nosp@m.s.edu,

Warning

AS-IS

Note

For more information see http://users.ece.utexas.edu/~valvano/

Date

May 23, 2025

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)

note to students****
the data sheet says the ADC does not work when clock is 80 MHz however, the ADC seems to work on my boards at 80 MHz I suggest you try 80MHz, but if it doesn't work, switch to 40MHz