Siva ram / Mbed 2 deprecated spiDMAtest

test

Dependencies:   SimpleDMA mbed-rtos mbed

Fork of spiDMAtest by Shreesha S

main.cpp@1:3cceef118195, 2015-07-16 (annotated)

Committer:
shreeshas95
Date:
Thu Jul 16 05:19:02 2015 +0000
Revision:
1:3cceef118195
Parent:
0:f0f5102ed9ca
Child:
2:16545dbc88ae
working with tiva checked

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shreeshas95 0:f0f5102ed9ca 1 #include "mbed.h"
shreeshas95 0:f0f5102ed9ca 2 #include "rtos.h"
shreeshas95 0:f0f5102ed9ca 3 #include "SimpleDMA.h"
shreeshas95 0:f0f5102ed9ca 4 #include "dmaSPIslave.h"
shreeshas95 0:f0f5102ed9ca 5
shreeshas95 1:3cceef118195 6 #define PAYLOAD_LENGTH 1024
shreeshas95 1:3cceef118195 7
shreeshas95 0:f0f5102ed9ca 8 dmaSPISlave spi(PTA16, PTA17, PTA15, PTA14);
shreeshas95 0:f0f5102ed9ca 9 RawSerial pc(USBTX, USBRX);
shreeshas95 0:f0f5102ed9ca 10 DigitalOut ledg(LED_GREEN);
shreeshas95 0:f0f5102ed9ca 11
shreeshas95 1:3cceef118195 12 bool flag = false;
shreeshas95 1:3cceef118195 13
shreeshas95 1:3cceef118195 14 void do_this(void){
shreeshas95 1:3cceef118195 15 flag = true;
shreeshas95 1:3cceef118195 16 }
shreeshas95 1:3cceef118195 17
shreeshas95 0:f0f5102ed9ca 18 int main(){
shreeshas95 0:f0f5102ed9ca 19 pc.baud(9600);
shreeshas95 0:f0f5102ed9ca 20 pc.printf("inside main\r\n");
shreeshas95 1:3cceef118195 21 spi.format(8,0);
shreeshas95 1:3cceef118195 22 // spi.frequency(16000000);
shreeshas95 0:f0f5102ed9ca 23
shreeshas95 1:3cceef118195 24 uint8_t buffer[PAYLOAD_LENGTH] = {0};
shreeshas95 0:f0f5102ed9ca 25 pc.printf("welcome to dma test, start sending data now\r\n");
shreeshas95 0:f0f5102ed9ca 26
shreeshas95 1:3cceef118195 27 // while(true){
shreeshas95 1:3cceef118195 28 // int i = 0;
shreeshas95 1:3cceef118195 29 // while(i < PAYLOAD_LENGTH){
shreeshas95 1:3cceef118195 30 // if(spi.receive()){
shreeshas95 1:3cceef118195 31 // buffer[i] = spi.read();
shreeshas95 1:3cceef118195 32 // ++i;
shreeshas95 1:3cceef118195 33 // ledg = !ledg;
shreeshas95 1:3cceef118195 34 // }
shreeshas95 0:f0f5102ed9ca 35 // }
shreeshas95 1:3cceef118195 36 // for(int i = 0 ; i < PAYLOAD_LENGTH ; ++i){
shreeshas95 1:3cceef118195 37 // pc.printf("%02x ", buffer[i]);
shreeshas95 1:3cceef118195 38 // }
shreeshas95 1:3cceef118195 39 // pc.printf("\r\n");
shreeshas95 1:3cceef118195 40 //
shreeshas95 0:f0f5102ed9ca 41 // }
shreeshas95 1:3cceef118195 42
shreeshas95 1:3cceef118195 43 spi.bulkRead_init(buffer, PAYLOAD_LENGTH, &do_this);
shreeshas95 1:3cceef118195 44 spi.bulkRead_start();
shreeshas95 1:3cceef118195 45 while(true){
shreeshas95 1:3cceef118195 46 if(flag){
shreeshas95 1:3cceef118195 47 flag = false;
shreeshas95 1:3cceef118195 48 ledg = !ledg;
shreeshas95 1:3cceef118195 49 for(int i = 0 ; i < PAYLOAD_LENGTH ; ++i){
shreeshas95 1:3cceef118195 50 pc.printf("%02x ", buffer[i]);
shreeshas95 1:3cceef118195 51 }
shreeshas95 1:3cceef118195 52 pc.printf("\r\n");
shreeshas95 1:3cceef118195 53 spi.bulkRead_start();
shreeshas95 1:3cceef118195 54 }
shreeshas95 0:f0f5102ed9ca 55 }
shreeshas95 0:f0f5102ed9ca 56
shreeshas95 0:f0f5102ed9ca 57 }