Lahis Almeida
This chip is a port expansor, thal "speak" to master through I2C communication.
Fork of
PCF8574
by 
Simon Ford
Revision 2:e5a4a2d24864, committed 2017-06-08
- Comitter:
- waspSalander
- Date:
- Thu Jun 08 13:31:05 2017 +0000
- Parent:
- 1:ec8da0c59403
- Commit message:
- Biblioteca do PCF8574; ; Expansor de portas que de comunica com o master por meio do Protocolo I2C.
Changed in this revision
| main.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 |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Jun 08 13:31:05 2017 +0000
@@ -0,0 +1,25 @@
+#include "mbed.h"
+DigitalOut debugPin(LED1);
+DigitalOut debugPin1(LED2);
+I2C i2c(p28, p29); // sda, scl
+Serial pc(USBTX, USBRX); // tx, rx
+
+const int addr = 0x40; // define the I2C Address
+
+int main() {
+ char cmd[2];
+
+ while(1) {
+ debugPin1 = 1;
+ cmd[0] = 0x40; // pointer to command register
+ cmd[1] = 0x00; // pointer to command register
+ //i2c.start();
+ i2c.write(addr, cmd, 2); // Send command string
+ //i2c.stop();
+ wait(1);
+ debugPin1 = 0;
+ wait(1);
+ // Could also poll, 65ms is typical
+
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Jun 08 13:31:05 2017 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/mbed/builds/856d2700e60b \ No newline at end of file