IEEE TAMU MCC / Mbed 2 deprecated SPI_Slave_Example_SerialComm

V1.0 of SPI Slave Example for Serial Communications Workshop

Dependencies:   mbed

main.cpp@0:45714e4b114f, 2015-03-06 (annotated)

Committer:
MoffMade
Date:
Fri Mar 06 22:01:40 2015 +0000
Revision:
0:45714e4b114f
V1.0 of SPI Slave Example for Serial Communications Workshop

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MoffMade 0:45714e4b114f 1 #include "mbed.h"
MoffMade 0:45714e4b114f 2
MoffMade 0:45714e4b114f 3 SPISlave spi(PTD2, PTD3, PTD1, PTD10); // mosi, miso, sclk, cs
MoffMade 0:45714e4b114f 4 Serial pc(USBTX, USBRX); // Configure UART
MoffMade 0:45714e4b114f 5 PwmOut g_led(LED_GREEN); // Configure Green LED
MoffMade 0:45714e4b114f 6
MoffMade 0:45714e4b114f 7 int main() {
MoffMade 0:45714e4b114f 8 // Setup the spi for 8 bit data, high steady state clock,
MoffMade 0:45714e4b114f 9 // second edge capture, with a 1MHz clock rate
MoffMade 0:45714e4b114f 10 spi.format(8,3);
MoffMade 0:45714e4b114f 11 spi.frequency(1000000);
MoffMade 0:45714e4b114f 12 // Configure PC/Serial Connection
MoffMade 0:45714e4b114f 13 pc.baud(9600);
MoffMade 0:45714e4b114f 14
MoffMade 0:45714e4b114f 15 while(1)
MoffMade 0:45714e4b114f 16 {
MoffMade 0:45714e4b114f 17 char receivedValue = 0;
MoffMade 0:45714e4b114f 18 if(spi.receive()) { //Poll SPI module to see if a byte has been received
MoffMade 0:45714e4b114f 19 receivedValue = spi.read(); // Read Received value
MoffMade 0:45714e4b114f 20 if(receivedValue != 0x00) {
MoffMade 0:45714e4b114f 21 spi.reply(receivedValue); // Set reply when next byte is received
MoffMade 0:45714e4b114f 22 pc.printf("Received Data = 0x%X\n\r",receivedValue); // Output to PC Serial
MoffMade 0:45714e4b114f 23 g_led = 1.0f * receivedValue; // Set Green LED to be percentage value
MoffMade 0:45714e4b114f 24 }
MoffMade 0:45714e4b114f 25 }
MoffMade 0:45714e4b114f 26 }
MoffMade 0:45714e4b114f 27 }