wayne roberts / Mbed OS i2c_slave_block_example

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependencies:   lib_i2c_slave_block

Files at this revision

API Documentation at this revision

Revision 3:0288d257446a, committed 2019-02-03

Comitter:
Wayne Roberts
Date:
Sun Feb 03 16:56:15 2019 -0800
Parent:
2:d7e05c75f240
Commit message:
indicate errors if reported by i2c

Changed in this revision

cmds.h Show annotated file Show diff for this revision Revisions of this file
lib_i2c_slave_block.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/cmds.h	Mon Jan 21 18:09:05 2019 -0800
+++ b/cmds.h	Sun Feb 03 16:56:15 2019 -0800
@@ -5,6 +5,10 @@
 #define CMD_IRQ                 0x03
 #define CMD_BUFFER              0x04
 
+#define CMD_TIMEOUT             0xfd    // indication of smbus timeout
+#define CMD_ARLO                0xfe    // indication of arbitration lost
+#define CMD_BUSERR              0xff    // indication of start or stop during transfer
+
 typedef union {
     struct __attribute__((packed)) {
         struct {

--- a/lib_i2c_slave_block.lib	Mon Jan 21 18:09:05 2019 -0800
+++ b/lib_i2c_slave_block.lib	Sun Feb 03 16:56:15 2019 -0800
@@ -1,1 +1,1 @@
-https://os.mbed.com/users/dudmuck/code/lib_i2c_slave_block/#914409dc83b1
+https://os.mbed.com/users/dudmuck/code/lib_i2c_slave_block/#7ab789db70da

--- a/main.cpp	Mon Jan 21 18:09:05 2019 -0800
+++ b/main.cpp	Sun Feb 03 16:56:15 2019 -0800
@@ -1,7 +1,6 @@
 
 #include <mbed.h>
 #include "smbus.h"
-#include "cmds.h"
 
 #define IRQ_OUT_PIN     D6
 
@@ -70,6 +69,16 @@
         case CMD_BUFFER:
             memcpy(test_buf, req, sizeof(test_buf));
             break;
+        /* failures: */
+        case CMD_BUSERR:
+            pc.printf("BUSERR%u\r\n", req[0]);
+            break;
+        case CMD_ARLO:
+            pc.printf("ARLO%u\r\n", req[0]); // req[0] tx_cndtr
+            break;
+        case CMD_TIMEOUT:
+            pc.printf("TIMEOUT%u\r\n", req[0]);    // req[0] tx_cndtr
+            break;
         default:
             pc.printf("??%02x??\r\n", cmd);
             break;
@@ -85,7 +94,7 @@
     pc.baud(115200);
     pc.printf("\r\nreset\r\n");
 
-    res = smbus_init(SLAVE_ADDRESS);
+    res = smbus_init(I2C_SDA, I2C_SCL, SLAVE_ADDRESS);
     pc.printf("%d = smbus_init()\r\n", res);
 
     but = button.read();