oaks oks486 / Mbed 2 deprecated I2CSlave_test

I2CSlave test program. I2CSlave library has some improper behavior, so this program is able to watch that. The workaround for this behavior, only for NXP device, is wrote in 'I2CSlave_mod_NXP.cpp'.

Dependencies:   mbed

First, write this program to the microcontroller which you want to check. Second, send I2C data to the microcontroller from the other one. Anything is enough for the transmission data, but the data length is made 8, 9, 10 and 11 bytes and confirm each reply.

main.cpp

Committer:
oks486
Date:
2016-04-15
Revision:
1:bd94bb3170b6
Parent:
0:7b78d1eee006

File content as of revision 1:bd94bb3170b6:

#include "mbed.h"

//#define I2C_SLAVE_MOD

#ifdef I2C_SLAVE_MOD
#include "I2CSlave_mod_NXP.h"
I2CSlave_mod slave(dp5, dp27);          // sda, scl
#else
I2CSlave slave(dp5, dp27);              // sda, scl
#endif

Serial serial(dp16, dp15);              // tx, rx
DigitalOut led(LED1);                  // indicator

int main() {
    led = 0;
    serial.baud(115200);

    char buf[10];
    slave.address(0x80);

    while(1) {
        int i = slave.receive();
        switch (i) {
            case I2CSlave::ReadAddressed:
                //slave.write(msg, strlen(msg) + 1); // Includes null char
                led = 0;
                break;
            case I2CSlave::WriteGeneral:
                //slave.read(buf, 10);
                //printf("Read G: %s\n", buf);
                led = 0;
                break;
            case I2CSlave::WriteAddressed:
                if (slave.read(buf, 10) == 0) {
                    // success
                    serial.printf("Read success. DATA: %s\n", buf);
                    led = 1;
                } else {
                    // failure
                    serial.printf("Read failure. DATA: %s\n", buf);
                    led = 0;
                }
                break;
        }

        for(int i = 0; i < 10; i++) buf[i] = 0;    // Clear buffer
    }
}