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mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

Diff: targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/i2c_api.c

Revision:
314:b682143dd337
Parent:
300:55638feb26a4
Child:
395:bfce16e86ea4
--- a/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/i2c_api.c	Thu Sep 11 13:00:06 2014 +0100
+++ b/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/i2c_api.c	Thu Sep 11 13:15:08 2014 +0100
@@ -30,8 +30,6 @@
     {NC, NC,    0}
 };
 
-uint8_t addrSet = 0;
-
 void i2c_interface_enable(i2c_t *obj)
 {
     obj->i2c->ENABLE = (TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos);
@@ -97,7 +95,7 @@
 {
     int status = 0;
     i2c_reset(obj);
-    addrSet = 0;
+    obj->address_set = 0;
     return status;
 }
 
@@ -113,7 +111,7 @@
             return 1;
         }
     }
-    addrSet = 0;
+    obj->address_set = 0;
     i2c_reset(obj);
     return 0;
 }
@@ -137,8 +135,13 @@
     int timeOut = 100000;
 
     if (last) {
-        obj->i2c->TASKS_STOP = 1;
+        // To trigger stop task when a byte is received,
+        // must be set before resume task.
+        obj->i2c->SHORTS = 2;
     }
+
+    obj->i2c->TASKS_RESUME = 1;
+
     while (!obj->i2c->EVENTS_RXDREADY) {
         timeOut--;
         if (timeOut<0) {
@@ -146,14 +149,8 @@
         }
     }
     obj->i2c->EVENTS_RXDREADY = 0;
-
     *data = obj->i2c->RXD;
 
-    for (int i = 0; i<320; i++) {
-    }
-
-    obj->i2c->TASKS_RESUME = 1;
-
     return 0;
 }
 
@@ -191,7 +188,7 @@
 {
     int status, count, errorResult;
     obj->i2c->ADDRESS         = (address >> 1);
-    obj->i2c->SHORTS          = 0;
+    obj->i2c->SHORTS          = 1;  // to trigger suspend task when a byte is received
     obj->i2c->EVENTS_RXDREADY = 0;
     obj->i2c->TASKS_STARTRX   = 1;
 
@@ -266,14 +263,16 @@
 int i2c_byte_write(i2c_t *obj, int data)
 {
     int status = 0;
-    if (!addrSet) {
-        addrSet           = 1;
+    if (!obj->address_set) {
+        obj->address_set  = 1;
         obj->i2c->ADDRESS = (data >> 1);
 
         if (data & 1) {
             obj->i2c->EVENTS_RXDREADY = 0;
+            obj->i2c->SHORTS          = 1;
             obj->i2c->TASKS_STARTRX   = 1;
         } else {
+            obj->i2c->SHORTS        = 0;
             obj->i2c->TASKS_STARTTX = 1;
         }
     } else {