SPI Master used to test FPGA spi slave
Dependencies: mbed
main.cpp
- Committer:
- leonardoaraujosantos
- Date:
- 2015-09-25
- Revision:
- 2:24e22b31819c
- Parent:
- 1:f05471667f60
File content as of revision 2:24e22b31819c:
#include "mbed.h" /* SPI Master used to test the FPGA slave https://developer.mbed.org/media/uploads/robt/mbed_course_notes_-_serial_spi.pdf */ Serial serialIO(SERIAL_TX, SERIAL_RX); int main() { // Configure the serial speed. serialIO.baud(115200); serialIO.printf("SPI Master example with mbed!\r\n"); // Configure the SPI to 8-bits Mode 0, 5Mhz // Create a SPI master SPI spiMaster(PA_7, PA_6, PA_5); // mosi, miso, sclk DigitalOut chipSelect(PB_6); spiMaster.format(8,0); int frequency; serialIO.printf("Choose SPI freq:\r\n"); serialIO.scanf("%d",&frequency); serialIO.printf("Setting frequency: %d\r\n",frequency); spiMaster.frequency(frequency); //5000000 chipSelect = 1; int mode = 0; int byteToSend = 0; int countPackages = 3; int foreverMode = 0; while(1) { if ((!byteToSend) || (countPackages == 0)) { serialIO.printf("Type the mode:\r\n"); serialIO.scanf("%d",&mode); spiMaster.format(8,mode); serialIO.printf("Type the byte value to send, then press ENTER\r\n"); serialIO.scanf("%d",&byteToSend); serialIO.printf("Number of times to send, then press ENTER (-1) is forever\r\n"); serialIO.scanf("%d",&countPackages); if (countPackages < 0) { foreverMode = 1; serialIO.printf("Sending %d packages on mode %d with freq: %d (FOREVER)\r\n",countPackages,mode,frequency); } else serialIO.printf("Sending %d packages on mode %d with freq: %d\r\n",countPackages,mode,frequency); } chipSelect = 0; int resp = spiMaster.write(byteToSend); chipSelect = 1; wait_us(2); if (!foreverMode) { serialIO.printf("Sending data<%d> received<%d> %d times\r\n",byteToSend, resp, countPackages); byteToSend++; } else { serialIO.printf("Sending data<%d> received<%d> %d times at freq:%d\r\n",byteToSend, resp, countPackages,frequency); } countPackages--; } }