Diff: targets/TARGET_NXP/TARGET_LPC11XX_11CXX/port_api.c

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NXP/TARGET_LPC11XX_11CXX/port_api.c	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,78 @@
+/* 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 "port_api.h"
+#include "pinmap.h"
+#include "gpio_api.h"
+
+// LPC114 IOCON offset table [port][pin]
+
+static uint8_t iocon_offset[4][12] = {
+    {0x0c,0x10,0x1c,0x2c,0x30,0x34,0x4c,0x50,0x60,0x64,0x68,0x74}, // PORT 0
+    {0x78,0x7c,0x80,0x90,0x94,0xa0,0xa4,0xa8,0x14,0x38,0x6c,0x98}, // PORT 1
+    {0x08,0x28,0x5c,0x8c,0x40,0x44,0x00,0x20,0x24,0x54,0x58,0x70}, // PORT 2
+    {0x84,0x88,0x9c,0xac,0x3c,0x48}                                // PORT 3
+};
+
+PinName port_pin(PortName port, int pin) {
+    return (PinName)((port << PORT_SHIFT) | (pin << PIN_SHIFT) | (uint32_t)iocon_offset[port][pin]);
+}
+
+void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
+    obj->port = port;
+    obj->mask = mask;
+    
+    LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (port * 0x10000)));
+    
+    obj->reg_data  = &port_reg->DATA;
+    obj->reg_dir = &port_reg->DIR;
+    
+    uint32_t i;
+    // The function is set per pin: reuse gpio logic
+    for (i=0; i<12; i++) {
+        if (obj->mask & (1<<i)) {
+            gpio_set(port_pin(obj->port, i));
+        }
+    }
+    
+    port_dir(obj, dir);
+}
+
+void port_mode(port_t *obj, PinMode mode) {
+    uint32_t i;
+    // The mode is set per pin: reuse pinmap logic
+    for (i=0; i<12; i++) {
+        if (obj->mask & (1<<i)) {
+            pin_mode(port_pin(obj->port, i), mode);
+        }
+    }
+}
+
+void port_dir(port_t *obj, PinDirection dir) {
+    switch (dir) {
+        case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
+        case PIN_OUTPUT: *obj->reg_dir |=  obj->mask; break;
+    }
+}
+
+void port_write(port_t *obj, int value) {
+    *obj->reg_data = (value & obj->mask);
+}
+
+int port_read(port_t *obj) {
+    return (*obj->reg_data & obj->mask);
+}
+