John Dave
I2C master and slave testing example
Revision 0:0c4c8f8e3e04, committed 2015-08-14
- Comitter:
- Yunfeng
- Date:
- Fri Aug 14 15:00:28 2015 +0000
- Commit message:
- initial commit for I2C master and slave test
Changed in this revision
diff -r 000000000000 -r 0c4c8f8e3e04 blinky_test.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/blinky_test.cpp Fri Aug 14 15:00:28 2015 +0000
@@ -0,0 +1,85 @@
+#include "fw_config.h"
+#if SEL_BLINKY_TEST == 1
+/*
+#include "mbed.h"
+
+DigitalOut pin01 (P0_1);
+DigitalOut pin023 (P0_23);
+DigitalOut pin021 (P0_21);
+DigitalOut pin022 (P0_22);
+DigitalOut pin115 (P1_15);
+DigitalOut pin018 (P0_18);
+DigitalOut pin019 (P0_19);
+DigitalOut pin119 (P1_19);
+DigitalOut pin020 (P0_20);
+DigitalOut pin07 (P0_7);
+DigitalOut pin02 (P0_2);
+DigitalOut pin04 (P0_4);
+DigitalOut pin05 (P0_5);
+
+
+DigitalOut pin08 (P0_8);
+DigitalOut pin09 (P0_9);
+DigitalOut pin010 (P0_10);
+DigitalOut pin011 (P0_11);
+DigitalOut pin012 (P0_12);
+DigitalOut pin013 (P0_13);
+DigitalOut pin014 (P0_14);
+DigitalOut pin015 (P0_15);
+DigitalOut pin016 (P0_16);
+DigitalOut pin017 (P0_17);
+
+void blinky_test() {
+ while(1) {
+ pin01 = 1;
+ pin023 = 1;
+ pin021 = 1;
+ pin022 = 1;
+ pin115 = 1;
+ pin018 = 1;
+ pin019 = 1;
+ pin119 = 1;
+ pin020 = 1;
+ pin07 = 1;
+ pin02 = 1;
+ pin04 = 1;
+ pin05 = 1;
+ pin08 = 1;
+ pin09 = 1;
+ pin010 = 1;
+ pin011 = 1;
+ pin012 = 1;
+ pin013 = 1;
+ pin014 = 1;
+ pin015 = 1;
+ pin016 = 1;
+ pin017 = 1;
+ wait (3);
+ pin01 = 0;
+ pin023 = 0;
+ pin021 = 0;
+ pin022 = 0;
+ pin115 = 0;
+ pin018 = 0;
+ pin019 = 0;
+ pin119 = 0;
+ pin020 = 0;
+ pin07 = 0;
+ pin02 = 0;
+ pin04 = 0;
+ pin05 = 0;
+ pin08 = 0;
+ pin09 = 0;
+ pin010 = 0;
+ pin011 = 0;
+ pin012 = 0;
+ pin013 = 0;
+ pin014 = 0;
+ pin015 = 0;
+ pin016 = 0;
+ pin017 = 0;
+ wait (3);
+ }
+}
+*/
+#endif
\ No newline at end of file
diff -r 000000000000 -r 0c4c8f8e3e04 fw_config.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/fw_config.h Fri Aug 14 15:00:28 2015 +0000 @@ -0,0 +1,8 @@ +#ifndef __CONFIG_H__ +#define __CONFIG_H__ + +#define SEL_BLINKY_TEST 0 +#define SEL_I2C_3200_TEST 1 +#define SEL_I2C_SLAVE_MODE 0 + +#endif \ No newline at end of file
diff -r 000000000000 -r 0c4c8f8e3e04 i2c_3200.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/i2c_3200.cpp Fri Aug 14 15:00:28 2015 +0000
@@ -0,0 +1,107 @@
+#include "fw_config.h"
+#if SEL_I2C_3200_TEST == 1
+
+#include "mbed.h"
+#if SEL_I2C_SLAVE_MODE == 1
+
+#else
+
+#endif
+
+DigitalOut pin07 (P0_20);
+DigitalOut pin12 (P0_21);
+DigitalOut pin21 (P0_11);
+
+#if SEL_I2C_SLAVE_MODE == 1
+void i2c_3200 () {
+
+ I2CSlave slave(P0_5 , P0_4);
+ // indicate enter
+ volatile int d = 0;
+ for (int i = 0; i < 5; i++) {
+ d = d > 0? 0:1;
+ pin07 = d;
+ pin12 = d;
+ pin21 = d;
+ wait(1);
+ }
+ pin07 = 1;
+ pin12 = 1;
+ pin21 = 1;
+ //while (1);
+
+
+ slave.address(0x60);
+ char buf[2];
+
+ while (1) {
+ int i = slave.receive();
+ switch (i) {
+ case I2CSlave::ReadAddressed:
+ buf[1] = 'Z';
+ slave.write(buf, 1); // Includes null char
+ pin07 = 0;
+ pin12 = 1;
+ pin21 = 1;
+ break;
+ case I2CSlave::WriteGeneral:
+ slave.read(buf, 10);
+ pin12 = 0;
+ pin07 = 1;
+ pin21 = 1;
+ printf("Read G: \n");
+ break;
+ case I2CSlave::WriteAddressed:
+ slave.read(buf, 1);
+ pin21 = 0;
+ pin07 = 1;
+ pin12 = 1;
+ if (buf[0] != 0xaa) {
+ pin07 = 0;
+ }
+ wait(0.3);
+ pin21 = 1;
+ printf("Read A: %x, %x\n", buf[0], buf[1]);
+ break;
+ }
+ //for(int i = 0; i < 10; i++) buf[i] = 0; // Clear buffer
+ }
+}
+#else
+void i2c_3200_master () {
+ volatile int d = 0;
+ for (int i = 0; i < 10; i++) {
+ d = d > 0? 0:1;
+ pin07 = d;
+ pin12 = d;
+ pin21 = d;
+ wait(1);
+ }
+ pin07 = 1;
+ pin12 = 1;
+ pin21 = 1;
+ I2C master(P0_5 , P0_4);
+ char cmd[2];
+ int err;
+ master.frequency(400000);
+ while (1) {
+ cmd[0] = 0xAA;
+ //cmd[1] = 0x01;
+ err = master.write(0x60, cmd, 1);
+ if (err) pin07 = 0;
+ wait(0.5);
+
+ cmd[0] = 0xAA;
+ //cmd[1] = 0x80;
+ err = master.write(0x60, cmd, 1);
+ if (err) pin12 = 0;
+ wait(0.5);
+ //slave.read(addr, cmd, 2);
+
+ //float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
+ //printf("Temp = %.2f\n", tmp);
+ }
+}
+#endif
+
+#endif
\ No newline at end of file
diff -r 000000000000 -r 0c4c8f8e3e04 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Aug 14 15:00:28 2015 +0000
@@ -0,0 +1,30 @@
+#include "fw_config.h"
+#include "mbed.h"
+
+
+
+#if SEL_BLINKY_TEST == 1
+void blinky_test();
+#endif
+
+#if SEL_I2C_3200_TEST == 1
+#if SEL_I2C_SLAVE_MODE == 1
+void i2c_3200();
+#else
+void i2c_3200_master();
+#endif
+#endif
+
+
+int main() {
+#if SEL_I2C_3200_TEST == 1
+#if SEL_I2C_SLAVE_MODE == 1
+ i2c_3200();
+#else
+ i2c_3200_master ();
+#endif
+ while (1) {}
+#endif
+}
+
+
diff -r 000000000000 -r 0c4c8f8e3e04 mbed-src.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-src.lib Fri Aug 14 15:00:28 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-src/#421d040916fe