dma_ex4_singleTransferADC12.c File Reference

#include "driverlib.h"

Go to the source code of this file.

Functions
void	main (void)
void	DMA_ISR (void)

Variables
uint16_t	DMA_DST

Function Documentation

DMA_ISR()

void DMA_ISR

(

void

)

Definition at line 233 of file dma_ex4_singleTransferADC12.c.

main()

void main

(

void

)

Definition at line 73 of file dma_ex4_singleTransferADC12.c.

References __no_operation(), DMA_DST, and GPIO_setOutputLowOnPin().

Variable Documentation

DMA_DST

uint16_t DMA_DST

DMA - Single Transfer using ADC12 trigger by TIMER_A, on Channel 0

This software uses TBCCR1 as a sample and convert input into the A0 of ADC12. ADC12IFG is used to trigger a DMA transfer and DMA interrupt triggers when DMA transfer is done. TB1 is set as an output and P1.0 is toggled when DMA ISR is serviced. ACLK = REFO = 32kHz, MCLK = SMCLK = default DCO 1048576Hz

           MSP430F552x
       -----------------
   /|\|              XIN|-
    | |                 | 32kHz
    --|RST          XOUT|-
      |                 |
      |             P1.0|-> LED
      |         P5.7/TB1|-> TIMER_A_B1 output
      |          P6.0/A0|<- A0
      |                 |

This example uses the following peripherals and I/O signals. You must review these and change as needed for your own board:

• DMA peripheral
• ADC12 peripheral
• GPIO Port peripheral
• A0

This example uses the following interrupt handlers. To use this example in your own application you must add these interrupt handlers to your vector table.

• DMA_VECTOR

Definition at line 71 of file dma_ex4_singleTransferADC12.c.

Referenced by main().