Diff: main.cpp

Revision:

1:3a2023b0563c

Parent:

0:392956e976ae

--- a/main.cpp	Fri Oct 14 08:42:47 2016 +0000
+++ b/main.cpp	Fri Oct 14 10:10:52 2016 +0000
@@ -1,26 +1,58 @@
+/***************************************************************************
+                                   DUMP I2C
+                                 +----------+ 
+Do an I2C Dump for testing.
+
+Fast PWM is use for dump ov7670 REG, I must have xclock for using I2C.
+You can remove them.
+
+Stéphane PEREZ (stefkpl)
+
+****************************************************************************/
+
 #include "mbed.h"
+#include "FastPWM.h"
+
  // Test DUMP I2C
-#define _ADDR     (0x43) 
+#define _ADDR     (0x42) 
+#define CAMERA_CLK_PERIOD .1// ==> 10Mhz 100nS 
+#define VSYNC   D9
  
 I2C i2c(I2C_SDA, I2C_SCL);
  
 DigitalOut myled(LED1);
- 
+
+FastPWM __xclk(VSYNC);
+
 Serial pc(SERIAL_TX, SERIAL_RX);
-  
+char value;
+char cmd;
 int main()
 {
-    int status = i2c.write(_ADDR);
+    __xclk.period_us(CAMERA_CLK_PERIOD);
+    __xclk.write(0.5);   
+   
     pc.printf("Begin Scan\r\n");
+ 
+    for (char n=0; n<0xFF; n++){
+
+        i2c.write(_ADDR, &n, 1);
+        i2c.read(_ADDR, &value, 1);
+        pc.printf("addresse 0x%x \t- reg:0x%x \t- value:%d \t- 0x%X\r\n",_ADDR, n, value, value);
+
+    }
+    // because n cannot be upper than 0xFF on the loop, and I don't want use another ... ;-)
+    value = 0xFF;
+    i2c.write(_ADDR, &value, 1);
+    i2c.read(_ADDR, &value, 1);
+    pc.printf("addresse 0x%x \t- reg:0x%x \t- value:%d \t- 0x%X\r\n",_ADDR, 0xFF, value, value);
+
+    pc.printf("End Scan\r\n");
     
-    // Read all register
-    data_write[0] = LM75_REG_TEMP;
-    i2c.write(LM75_ADDR, data_write, 1, 1); // no stop
-    i2c.read(LM75_ADDR, data_read, 2, 0);
-
     while (1) {
         myled = !myled;
         wait(0.2);
+    }
  
 }