Diff: targets/TARGET_NXP/TARGET_LPC81X/pinmap.c

Revision:

0:f269e3021894

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NXP/TARGET_LPC81X/pinmap.c	Sun Oct 23 15:10:02 2016 +0000
@@ -0,0 +1,61 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "mbed_assert.h"
+#include "pinmap.h"
+#include "mbed_error.h"
+
+__IO uint32_t* IOCON_REGISTERS[18] = {
+        &LPC_IOCON->PIO0_0 , &LPC_IOCON->PIO0_1 , &LPC_IOCON->PIO0_2 ,
+        &LPC_IOCON->PIO0_3 , &LPC_IOCON->PIO0_4 , &LPC_IOCON->PIO0_5 ,
+        &LPC_IOCON->PIO0_6 , &LPC_IOCON->PIO0_7 , &LPC_IOCON->PIO0_8 ,
+        &LPC_IOCON->PIO0_9 , &LPC_IOCON->PIO0_10, &LPC_IOCON->PIO0_11,
+        &LPC_IOCON->PIO0_12, &LPC_IOCON->PIO0_13, &LPC_IOCON->PIO0_14,
+        &LPC_IOCON->PIO0_15, &LPC_IOCON->PIO0_16, &LPC_IOCON->PIO0_17,
+};
+
+void pin_function(PinName pin, int function) {
+    if (function == 0) {
+        // Disable initial fixed function for P0_2, P0_3 and P0_5
+        uint32_t enable = 0;
+        if (pin == P0_2)
+            enable = 1 << 3;
+        else if (pin == P0_3)
+            enable = 1 << 2;
+        else if (pin == P0_5)
+            enable = 1 << 6;
+        LPC_SWM->PINENABLE0 |= enable;
+    }
+}
+
+void pin_mode(PinName pin, PinMode mode) {
+    MBED_ASSERT(pin != (PinName)NC);
+
+    if ((pin == 10) || (pin == 11)) {
+        // True open-drain pins can be configured for different I2C-bus speeds
+        return;
+    }
+    
+    __IO uint32_t *reg = IOCON_REGISTERS[pin];
+    
+    if (mode == OpenDrain) {
+        *reg |= (1 << 10);
+    } else {
+        uint32_t tmp = *reg;
+        tmp &= ~(0x3 << 3);
+        tmp |= (mode & 0x3) << 3;
+        *reg = tmp;
+    }
+}