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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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_STM/TARGET_NUCLEO_L053R8/i2c_api.c

Revision:
489:119543c9f674
Parent:
414:4ec4c5b614b0
--- a/targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/i2c_api.c	Thu Mar 05 13:15:07 2015 +0000
+++ b/targets/hal/TARGET_STM/TARGET_NUCLEO_L053R8/i2c_api.c	Thu Mar 12 14:30:49 2015 +0000
@@ -44,11 +44,14 @@
 
 I2C_HandleTypeDef I2cHandle;
 
-int i2c1_inited = 0;
-int i2c2_inited = 0;
-
 void i2c_init(i2c_t *obj, PinName sda, PinName scl)
 {
+    static int i2c1_inited = 0;
+    static int i2c2_inited = 0;
+#if defined(I2C3_BASE)
+    static int i2c3_inited = 0;
+#endif
+
     // Determine the I2C to use
     I2CName i2c_sda = (I2CName)pinmap_peripheral(sda, PinMap_I2C_SDA);
     I2CName i2c_scl = (I2CName)pinmap_peripheral(scl, PinMap_I2C_SCL);
@@ -67,6 +70,7 @@
         pin_mode(sda, OpenDrain);
         pin_mode(scl, OpenDrain);
     }
+
     // Enable I2C2 clock and pinout if not done
     if ((obj->i2c == I2C_2) && !i2c2_inited) {
         i2c2_inited = 1;
@@ -78,6 +82,19 @@
         pin_mode(scl, OpenDrain);
     }
 
+#if defined(I2C3_BASE)
+    // Enable I2C3 clock and pinout if not done
+    if ((obj->i2c == I2C_3) && !i2c3_inited) {
+        i2c3_inited = 1;
+        __I2C3_CLK_ENABLE();
+        // Configure I2C pins
+        pinmap_pinout(sda, PinMap_I2C_SDA);
+        pinmap_pinout(scl, PinMap_I2C_SCL);
+        pin_mode(sda, OpenDrain);
+        pin_mode(scl, OpenDrain);
+    }
+#endif
+
     // Reset to clear pending flags if any
     i2c_reset(obj);