Hsieh JenYun / Mbed OS 446STM32_PC_I2CS

V1

Fork of 446STM32_Print_PC_I2CS by Hsieh JenYun

main.cpp@3:4d977dd77a4b, 2017-11-10 (annotated)

Committer:
Tanakacool
Date:
Fri Nov 10 05:08:18 2017 +0000
Revision:
3:4d977dd77a4b
Parent:
2:764981c589b6 
v2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Tanakacool 2:764981c589b6 1 #include "mbed.h"
Tanakacool 2:764981c589b6 2
Tanakacool 1:51fb8c086992 3 DigitalOut myled(LED1);
Tanakacool 1:51fb8c086992 4 Serial pc(USBTX, USBRX);
Tanakacool 2:764981c589b6 5 I2CSlave slave(PC_9, PA_8);
Tanakacool 3:4d977dd77a4b 6 void boxslave();
Tanakacool 2:764981c589b6 7
Tanakacool 2:764981c589b6 8 int main() {
Tanakacool 0:8be7c91879df 9 char buffer[128];
Tanakacool 3:4d977dd77a4b 10 slave.address(0xA0);
Tanakacool 2:764981c589b6 11
Tanakacool 2:764981c589b6 12 while(1){
Tanakacool 3:4d977dd77a4b 13 boxslave();
Tanakacool 3:4d977dd77a4b 14
Tanakacool 0:8be7c91879df 15 if(pc.readable()) {
Tanakacool 3:4d977dd77a4b 16 //slave.stop();
Tanakacool 0:8be7c91879df 17 pc.gets(buffer, 128);
Tanakacool 0:8be7c91879df 18 pc.printf("I got '%s'\n", buffer);
Tanakacool 3:4d977dd77a4b 19 //slave.stop();
Tanakacool 0:8be7c91879df 20 }
Tanakacool 3:4d977dd77a4b 21 }
Tanakacool 3:4d977dd77a4b 22 }
Tanakacool 3:4d977dd77a4b 23 void boxslave(){
Tanakacool 3:4d977dd77a4b 24 char buf[20];
Tanakacool 3:4d977dd77a4b 25 char msg[] = "Hi Master!";
Tanakacool 3:4d977dd77a4b 26 char all_buf[]="i'm here!";
Tanakacool 3:4d977dd77a4b 27 int i = slave.receive();
Tanakacool 2:764981c589b6 28 switch (i) {
Tanakacool 0:8be7c91879df 29 case I2CSlave::ReadAddressed:
Tanakacool 0:8be7c91879df 30 if(!slave.write(msg, strlen(msg) + 1)) // Includes null char
Tanakacool 0:8be7c91879df 31 slave.stop();
Tanakacool 0:8be7c91879df 32 printf("ReadAddressed\n");
Tanakacool 0:8be7c91879df 33 //slave.stop();
Tanakacool 0:8be7c91879df 34 break;
Tanakacool 0:8be7c91879df 35 case I2CSlave::WriteGeneral:
Tanakacool 0:8be7c91879df 36 if(!slave.write(all_buf, strlen(all_buf) + 1)) // Includes null char
Tanakacool 0:8be7c91879df 37 slave.stop();
Tanakacool 0:8be7c91879df 38 printf("i've received the command...\n");
Tanakacool 0:8be7c91879df 39 break;
Tanakacool 0:8be7c91879df 40 case I2CSlave::WriteAddressed:
Tanakacool 0:8be7c91879df 41 slave.read(buf, 20);
Tanakacool 0:8be7c91879df 42 printf("master write to A: %s\n", buf);
Tanakacool 0:8be7c91879df 43 break;
Tanakacool 0:8be7c91879df 44 }
Tanakacool 0:8be7c91879df 45 for(int i = 0; i < 10; i++) {
Tanakacool 0:8be7c91879df 46 buf[i] = 0; // Clear buffer
Tanakacool 0:8be7c91879df 47 }
Tanakacool 0:8be7c91879df 48 }