Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/port_api.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NORDIC/TARGET_MCU_NRF51822/port_api.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,84 @@ +/* mbed Microcontroller Library + * Copyright (c) 2013 Nordic Semiconductor + * + * 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" + +PinName port_pin(PortName port, int pin_n) +{ + return (PinName)(pin_n); +} + +void port_init(port_t *obj, PortName port, int mask, PinDirection dir) +{ + obj->port = port; + obj->mask = mask; + + obj->reg_out = &NRF_GPIO->OUT; + obj->reg_in = &NRF_GPIO->IN; + obj->reg_cnf = NRF_GPIO->PIN_CNF; + + 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<31; i++) { + if (obj->mask & (1 << i)) { + pin_mode(port_pin(obj->port, i), mode); + } + } +} + +void port_dir(port_t *obj, PinDirection dir) +{ + int i; + switch (dir) { + case PIN_INPUT: + for (i = 0; i<31; i++) { + if (obj->mask & (1 << i)) { + obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) + | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) + | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) + | (GPIO_PIN_CNF_DIR_Input << GPIO_PIN_CNF_DIR_Pos); + } + } + break; + case PIN_OUTPUT: + for (i = 0; i<31; i++) { + if (obj->mask & (1 << i)) { + obj->reg_cnf[i] = (GPIO_PIN_CNF_SENSE_Disabled << GPIO_PIN_CNF_SENSE_Pos) + | (GPIO_PIN_CNF_DRIVE_S0S1 << GPIO_PIN_CNF_DRIVE_Pos) + | (GPIO_PIN_CNF_PULL_Disabled << GPIO_PIN_CNF_PULL_Pos) + | (GPIO_PIN_CNF_INPUT_Connect << GPIO_PIN_CNF_INPUT_Pos) + | (GPIO_PIN_CNF_DIR_Output << GPIO_PIN_CNF_DIR_Pos); + } + } + break; + } +} + +void port_write(port_t *obj, int value) +{ + *obj->reg_out = value; +} + +int port_read(port_t *obj) +{ + return (*obj->reg_in); +}