added prescaler for 16 bit pwm in LPC1347 target
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Diff: targets/hal/TARGET_ARM_SSG/TARGET_IOTSS/gpio_api.c
- Revision:
- 80:bdf1132a57cf
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_ARM_SSG/TARGET_IOTSS/gpio_api.c Wed Mar 02 14:30:11 2016 +0000 @@ -0,0 +1,140 @@ +/* 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; + }else if (pin == 323){ + pin_value = pin-315; + }else if (pin == 334){ + pin_value = pin-325; + }else if (pin == 653){ + pin_value = pin-646; + } + + 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 + }else if (pin == 323 || pin == 334 || pin == 653){ //spi 3 chip select = 323, spi 4 chip select = 334, adc chip select = 653 + obj->reg_data = &MPS2_FPGAIO->MISC; //spi cs bits + } + + if (pin == 323){ + CMSDK_GPIO0->ALTFUNCSET |= 0x0400; + }else if (pin == 334){ + CMSDK_GPIO4->ALTFUNCSET |= 0x0001; + }else if (pin == 653){ + CMSDK_GPIO1->ALTFUNCSET |= 0x0004; + } + } +} + +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; + } +} +