mbed official / mbed-src

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_Freescale/TARGET_KLXX/i2c_api.c

Revision:
178:a873352662d8
Parent:
82:0b31dbcd4769
Child:
182:242346c42295
--- a/targets/hal/TARGET_Freescale/TARGET_KLXX/i2c_api.c	Thu May 01 13:00:08 2014 +0100
+++ b/targets/hal/TARGET_Freescale/TARGET_KLXX/i2c_api.c	Wed May 07 09:00:07 2014 +0100
@@ -37,8 +37,6 @@
       2304, 2560, 3072, 3840
 };
 
-static uint8_t first_read;
-
 
 void i2c_init(i2c_t *obj, PinName sda, PinName scl) {
     // determine the I2C to use
@@ -63,8 +61,6 @@
 
     pinmap_pinout(sda, PinMap_I2C_SDA);
     pinmap_pinout(scl, PinMap_I2C_SCL);
-    
-    first_read = 1;
 }
 
 int i2c_start(i2c_t *obj) {
@@ -84,7 +80,6 @@
         obj->i2c->C1 |= I2C_C1_MST_MASK;
         obj->i2c->C1 |= I2C_C1_TX_MASK;
     }
-    first_read = 1;
     return 0;
 }
 
@@ -98,7 +93,6 @@
     // This wait is also included on the samples
     // code provided with the freedom board
     for (n = 0; n < 100; n++) __NOP();
-    first_read = 1;
     return 0;
 }
 
@@ -284,26 +278,15 @@
     // set rx mode
     obj->i2c->C1 &= ~I2C_C1_TX_MASK;
     
-    if(first_read) {
-        // first dummy read
-        i2c_do_read(obj, &data, 0);
-        first_read = 0;
-    }
-    
-    if (last) {
-        // set tx mode
-        obj->i2c->C1 |= I2C_C1_TX_MASK;
-        return obj->i2c->D;
-    }
-        
+    // Setup read
     i2c_do_read(obj, &data, last);
-    
-    return data;
+
+    // set tx mode
+    obj->i2c->C1 |= I2C_C1_TX_MASK;
+    return obj->i2c->D;
 }
 
 int i2c_byte_write(i2c_t *obj, int data) {
-    first_read = 1;
-    
     // set tx mode
     obj->i2c->C1 |= I2C_C1_TX_MASK;