CQ_I2C_book
I2C-bus switch with reset
Dependencies: mbed
Revision 0:afc432dbba61, committed 2015-02-04
- Comitter:
- wataaki
- Date:
- Wed Feb 04 06:04:27 2015 +0000
- Commit message:
- Initial version
Changed in this revision
| PCA9546A.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r afc432dbba61 PCA9546A.cpp
--- /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
+ }
+}
diff -r 000000000000 -r afc432dbba61 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Feb 04 06:04:27 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file