Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_ublox/TARGET_HI2110/port_api.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_ublox/TARGET_HI2110/port_api.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,103 @@ +/* mbed Microcontroller Library + * Copyright (c) 2016 u-blox + * + * 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. + */ + +/* TODO: this needs testing */ + +#include "port_api.h" +#include "pinmap.h" +#include "gpio_api.h" + +PinName port_pin(PortName port, int pin_n) +{ + MBED_ASSERT (port < PortMaxNumber); + + (void) port; + return (PinName)(pin_n); +} + +void port_init(port_t *obj, PortName port, int mask, PinDirection dir) +{ + MBED_ASSERT (port < PortMaxNumber); + + obj->port = port; + obj->mask = mask; + + obj->reg_dir = &GPIO_DIR; + obj->reg_out = &GPIO_OUT; + obj->reg_val = &GPIO_VALUE; + obj->reg_drv = &GPIO_DRIVE; + + /* Claim the pins */ + for (uint8_t x = 0; x < NUM_PINS; x++) { + if (mask & (1ul << x)) { + pin_function((PinName) x, PIN_FUNCTION_GPIO); + } + } + + /* Set up the pins */ + port_dir(obj, dir); +} + +void port_mode(port_t *obj, PinMode mode) +{ + switch (mode) { + case PullUp: + { + MBED_ASSERT(false); /* Not currently supported on HI2110 */ + } + break; + case PullDown: + { + GPIO_PULLEN_BITSET |= obj->mask; + } + break; + case PullNone: + { + GPIO_PULLEN_BITCLR &= ~(obj->mask); + } + break; + default: + break; + } +} + +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; + /* TODO: do we need to set the drive strength? If so, how do we decide which way? */ + /* obj->reg_drv |= obj->mask; */ + } + break; + } +} + +void port_write(port_t *obj, int value) +{ + *(obj->reg_out) = value; +} + +int port_read(port_t *obj) +{ + return *(obj->reg_val); +}