Diff: targets/hal/TARGET_ARM_SSG/TARGET_MPS2/gpio_api.c

Revision:

580:3c14cb9b87c5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_ARM_SSG/TARGET_MPS2/gpio_api.c	Thu Jul 02 16:15:09 2015 +0100
@@ -0,0 +1,124 @@
+/* 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 "gpio_api.h"
+#include "pinmap.h"
+
+// function to enable the GPIO pin
+uint32_t gpio_set(PinName pin) {
+	return (1);
+}
+
+//function to initialise the gpio pin
+// this links the board control bits for each pin 
+// with the object created for the pin
+void gpio_init(gpio_t *obj, PinName pin) {
+		if(pin == NC){ return;}
+		else {
+		int pin_value = 0;
+		obj->pin = pin;
+		if(pin <=15){
+			pin_value = pin;
+		}else if (pin >= 16 && pin <= 31){
+			pin_value = pin-16;
+		}else if (pin >= 32 && pin <= 47){
+			pin_value = pin-32;
+		}else if (pin >= 48 && pin <= 51){
+			pin_value = pin-48;
+		}else if (pin == 100 || pin == 101){
+			pin_value = pin-100;
+		}else if (pin == 110 || pin == 111){
+			pin_value = pin-110;
+		}else if (pin >= 200 && pin <= 207){
+			pin_value = pin-200;
+		}else if (pin >= 210 && pin <= 217){
+			pin_value = pin-210;
+		}else if (pin == 303){
+			pin_value = pin-302;
+		}else if (pin == 307){
+			pin_value = pin-307;
+		}else if (pin == 308){
+			pin_value = pin-305;
+		}else if (pin == 309){
+			pin_value = pin-305;
+		}else if (pin == 310){
+			pin_value = pin-305;
+		}else if (pin == 311){
+			pin_value = pin-305;
+		}
+		
+		obj->mask = 0x1 << pin_value;
+		obj->pin_number = pin;
+		if(pin <=15) {
+			obj->reg_data = &CMSDK_GPIO0->DATAOUT ;
+			obj->reg_in  = 		&CMSDK_GPIO0->DATA ;
+			obj->reg_dir = 		&CMSDK_GPIO0->OUTENABLESET ;
+			obj->reg_dirclr = &CMSDK_GPIO0->OUTENABLECLR ;
+		} else if (pin >= 16 && pin <= 31){
+			obj->reg_data = &CMSDK_GPIO1->DATAOUT ;
+			obj->reg_in  = 		&CMSDK_GPIO1->DATA ;
+			obj->reg_dir = 		&CMSDK_GPIO1->OUTENABLESET ;
+			obj->reg_dirclr = &CMSDK_GPIO1->OUTENABLECLR ;
+		} else if (pin >= 32 && pin <= 47){
+			obj->reg_data = &CMSDK_GPIO2->DATAOUT;
+			obj->reg_in  = 		&CMSDK_GPIO2->DATA;
+			obj->reg_dir = 		&CMSDK_GPIO2->OUTENABLESET ;
+			obj->reg_dirclr = &CMSDK_GPIO2->OUTENABLECLR ;
+		}	else if (pin >= 48 && pin <= 51){
+			obj->reg_data = &CMSDK_GPIO3->DATAOUT;
+			obj->reg_in  = 		&CMSDK_GPIO3->DATA;
+			obj->reg_dir = 		&CMSDK_GPIO3->OUTENABLESET ;
+			obj->reg_dirclr = &CMSDK_GPIO3->OUTENABLECLR ;
+		} else if (pin == 100 || pin == 101){
+			obj->reg_data = &MPS2_FPGAIO->LED; //user leds
+			obj->reg_in  =  &MPS2_FPGAIO->LED;
+		} else if (pin == 110 || pin == 111){
+			obj->reg_data = &MPS2_FPGAIO->BUTTON; //user switches
+			obj->reg_in = &MPS2_FPGAIO->BUTTON; //user switches
+		}else if (pin >= 200 && pin <= 207){
+			obj->reg_data = &MPS2_SCC->LEDS; //mcc leds
+			obj->reg_in = &MPS2_SCC->LEDS; //mcc leds
+		}else if (pin >= 210 && pin <= 217){
+			obj->reg_in = &MPS2_SCC->SWITCHES; //mcc switches
+		}else if (pin == 303 || pin == 307){
+			obj->reg_data = &MPS2_FPGAIO->MISC; //spi chip select = 303, clcd chip select = 307
+		}else if (pin == 308 || pin == 309 || pin == 310 || pin == 311){
+			obj->reg_data = &MPS2_FPGAIO->MISC; //clcd control bits
+		}
+	}
+}
+
+void gpio_mode(gpio_t *obj, PinMode mode) {
+		pin_mode(obj->pin, mode);
+}
+
+void gpio_dir(gpio_t *obj, PinDirection direction) {
+		if(obj->pin >= 0 && obj->pin <= 51)
+			{		
+        switch (direction) {
+          case PIN_INPUT : *obj->reg_dirclr = obj->mask;  break;
+          case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
+        }
+    } else {return;}
+}
+
+int gpio_is_connected(const gpio_t *obj){
+	if(obj->pin != (PinName)NC){
+		return 1;
+	} else {
+		return 0;
+	}
+}
+