mbed library sources, include can_api for nucleo-f091rc
Dependents: CanNucleoF0_example
Fork of mbed-src by
Diff: targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/port_api.c
- Revision:
- 30:91c1d09ada54
diff -r 6ac4027eff2b -r 91c1d09ada54 targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/port_api.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/port_api.c Wed Sep 25 10:30:04 2013 +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); +} +