Diff: targets/TARGET_Freescale/TARGET_K20XX/pinmap.c

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_Freescale/TARGET_K20XX/pinmap.c	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,38 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2015 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"
+
+void pin_function(PinName pin, int function) {
+    MBED_ASSERT(pin != (PinName)NC);
+
+    uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
+    uint32_t pin_n  = (uint32_t)(pin & 0x7C) >> 2;
+
+    SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
+    __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
+
+    // pin mux bits: [10:8] -> 11100000000 = (0x700)
+    *pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
+}
+
+void pin_mode(PinName pin, PinMode mode) {
+    MBED_ASSERT(pin != (PinName)NC);
+    __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
+
+    // pin pullup bits: [1:0] -> 11 = (0x3)
+    *pin_pcr = (*pin_pcr & ~0x3) | mode;
+}