CQ_I2C_book / Mbed 2 deprecated PCA9546A

I2C-bus switch with reset

Dependencies:   mbed

Diff: PCA9546A.cpp

Revision:
0:afc432dbba61
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9546A.cpp	Wed Feb 04 06:04:27 2015 +0000
@@ -0,0 +1,23 @@
+#include "mbed.h"
+ 
+I2C i2c(p28,p27);        // sda, scl
+Serial pc(USBTX, USBRX); // tx, rx
+char cmd[32];
+int i, j, k;
+int sw;
+ 
+int main ()
+{
+    i2c.frequency(100000);
+    pc.printf("PCA9546A Sample Program\r\n");
+    
+  // PCA9546A
+    while(1)
+    {
+        pc.printf("選択チャネルは？ 0 0 0 0 CH3 CH2 CH1 CH0 16進数で入力 \r\n");
+        pc.scanf("%x", &sw);
+        pc.printf("CH3=%d, CH2=%d, CH1=%d, CH0=%d\r\n\r\n", (sw & 0x8)>>3, (sw & 0x4)>>2, (sw & 0x2)>>1, (sw & 0x1));
+        cmd[0] = sw;                 // PCA9546 Cont Reg Ch1 enabled
+        i2c.write(0xe8, cmd, 1); // Send command string
+    }
+}