Revision 6:e83f444edda0, committed 2018-12-17

Comitter:

maner1256

Date:

Mon Dec 17 18:01:55 2018 +0000

Parent:

5:afb2d7fd50ad

Commit message:

master

Changed in this revision

diff -r afb2d7fd50ad -r e83f444edda0 main.cpp
--- a/main.cpp	Fri Jun 23 18:11:39 2017 -0500
+++ b/main.cpp	Mon Dec 17 18:01:55 2018 +0000
@@ -1,41 +1,40 @@
-/* mbed Example Program
- * Copyright (c) 2006-2014 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
 #include "mbed.h"
- 
-// Read temperature from LM75BD
 
-I2C i2c(I2C_SDA , I2C_SCL ); 
+I2C i2cMaster(D14,D15);// SDA, SCL
+DigitalIn mybutton(USER_BUTTON);
+Serial pc(USBTX, USBRX);
+char writeData[6];
+    
+int main() {
+    
+    pc.baud(57600);
+    pc.printf("Starting I2CMaster\r\n");
+    i2cMaster.frequency(400000);
+    int  address  ;
+    writeData[0]=0x01;
+    writeData[1]=0x02;
+    writeData[2]=0x03;
+    writeData[3]=0x04;
+    writeData[4]=0x05;
+    writeData[5]=0x06;
 
-const int addr7bit = 0x48;      // 7 bit I2C address
-const int addr8bit = 0x48 << 1; // 8bit I2C address, 0x90
-
-int main() {
-    char cmd[2];
-    while (1) {
-        cmd[0] = 0x01;
-        cmd[1] = 0x00;
-        i2c.write(addr8bit, cmd, 2);
- 
-        wait(0.5);
- 
-        cmd[0] = 0x00;
-        i2c.write(addr8bit, cmd, 1);
-        i2c.read( addr8bit, cmd, 2);
- 
-        float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
-        printf("Temp = %.2f\n", tmp);
+    while(1) {
+        int count = 0;
+        for (address=0; address<256; address+=2) {
+            if (!i2cMaster.write( address , NULL, 0)) { // 0 returned is ok                
+                pc.printf("I2C address 0x%02X\r\n", address);
+                count++;
+                break;
+            }
+        pc.printf("I2C address 0x%02X\r\n", address);
+    if(mybutton == 0) {
+    
+    i2cMaster.write(address,writeData,6);
+    
+    pc.printf("i2cMaster Sent writeData[0] To 0x%02X \r\n", address);
+    wait(2);
     }
-}
\ No newline at end of file
+   
+    }
+    }
+    }