Mouse code for the MacroRat
mbed-dev/targets/TARGET_ublox/TARGET_HI2110/port_api.c@18:6a4db94011d3, 2017-05-14 (annotated)
- Committer:
- sahilmgandhi
- Date:
- Sun May 14 23:18:57 2017 +0000
- Revision:
- 18:6a4db94011d3
Publishing again
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
sahilmgandhi | 18:6a4db94011d3 | 1 | /* mbed Microcontroller Library |
sahilmgandhi | 18:6a4db94011d3 | 2 | * Copyright (c) 2016 u-blox |
sahilmgandhi | 18:6a4db94011d3 | 3 | * |
sahilmgandhi | 18:6a4db94011d3 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
sahilmgandhi | 18:6a4db94011d3 | 5 | * you may not use this file except in compliance with the License. |
sahilmgandhi | 18:6a4db94011d3 | 6 | * You may obtain a copy of the License at |
sahilmgandhi | 18:6a4db94011d3 | 7 | * |
sahilmgandhi | 18:6a4db94011d3 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
sahilmgandhi | 18:6a4db94011d3 | 9 | * |
sahilmgandhi | 18:6a4db94011d3 | 10 | * Unless required by applicable law or agreed to in writing, software |
sahilmgandhi | 18:6a4db94011d3 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
sahilmgandhi | 18:6a4db94011d3 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
sahilmgandhi | 18:6a4db94011d3 | 13 | * See the License for the specific language governing permissions and |
sahilmgandhi | 18:6a4db94011d3 | 14 | * limitations under the License. |
sahilmgandhi | 18:6a4db94011d3 | 15 | */ |
sahilmgandhi | 18:6a4db94011d3 | 16 | |
sahilmgandhi | 18:6a4db94011d3 | 17 | /* TODO: this needs testing */ |
sahilmgandhi | 18:6a4db94011d3 | 18 | |
sahilmgandhi | 18:6a4db94011d3 | 19 | #include "port_api.h" |
sahilmgandhi | 18:6a4db94011d3 | 20 | #include "pinmap.h" |
sahilmgandhi | 18:6a4db94011d3 | 21 | #include "gpio_api.h" |
sahilmgandhi | 18:6a4db94011d3 | 22 | |
sahilmgandhi | 18:6a4db94011d3 | 23 | PinName port_pin(PortName port, int pin_n) |
sahilmgandhi | 18:6a4db94011d3 | 24 | { |
sahilmgandhi | 18:6a4db94011d3 | 25 | MBED_ASSERT (port < PortMaxNumber); |
sahilmgandhi | 18:6a4db94011d3 | 26 | |
sahilmgandhi | 18:6a4db94011d3 | 27 | (void) port; |
sahilmgandhi | 18:6a4db94011d3 | 28 | return (PinName)(pin_n); |
sahilmgandhi | 18:6a4db94011d3 | 29 | } |
sahilmgandhi | 18:6a4db94011d3 | 30 | |
sahilmgandhi | 18:6a4db94011d3 | 31 | void port_init(port_t *obj, PortName port, int mask, PinDirection dir) |
sahilmgandhi | 18:6a4db94011d3 | 32 | { |
sahilmgandhi | 18:6a4db94011d3 | 33 | MBED_ASSERT (port < PortMaxNumber); |
sahilmgandhi | 18:6a4db94011d3 | 34 | |
sahilmgandhi | 18:6a4db94011d3 | 35 | obj->port = port; |
sahilmgandhi | 18:6a4db94011d3 | 36 | obj->mask = mask; |
sahilmgandhi | 18:6a4db94011d3 | 37 | |
sahilmgandhi | 18:6a4db94011d3 | 38 | obj->reg_dir = &GPIO_DIR; |
sahilmgandhi | 18:6a4db94011d3 | 39 | obj->reg_out = &GPIO_OUT; |
sahilmgandhi | 18:6a4db94011d3 | 40 | obj->reg_val = &GPIO_VALUE; |
sahilmgandhi | 18:6a4db94011d3 | 41 | obj->reg_drv = &GPIO_DRIVE; |
sahilmgandhi | 18:6a4db94011d3 | 42 | |
sahilmgandhi | 18:6a4db94011d3 | 43 | /* Claim the pins */ |
sahilmgandhi | 18:6a4db94011d3 | 44 | for (uint8_t x = 0; x < NUM_PINS; x++) { |
sahilmgandhi | 18:6a4db94011d3 | 45 | if (mask & (1ul << x)) { |
sahilmgandhi | 18:6a4db94011d3 | 46 | pin_function((PinName) x, PIN_FUNCTION_GPIO); |
sahilmgandhi | 18:6a4db94011d3 | 47 | } |
sahilmgandhi | 18:6a4db94011d3 | 48 | } |
sahilmgandhi | 18:6a4db94011d3 | 49 | |
sahilmgandhi | 18:6a4db94011d3 | 50 | /* Set up the pins */ |
sahilmgandhi | 18:6a4db94011d3 | 51 | port_dir(obj, dir); |
sahilmgandhi | 18:6a4db94011d3 | 52 | } |
sahilmgandhi | 18:6a4db94011d3 | 53 | |
sahilmgandhi | 18:6a4db94011d3 | 54 | void port_mode(port_t *obj, PinMode mode) |
sahilmgandhi | 18:6a4db94011d3 | 55 | { |
sahilmgandhi | 18:6a4db94011d3 | 56 | switch (mode) { |
sahilmgandhi | 18:6a4db94011d3 | 57 | case PullUp: |
sahilmgandhi | 18:6a4db94011d3 | 58 | { |
sahilmgandhi | 18:6a4db94011d3 | 59 | MBED_ASSERT(false); /* Not currently supported on HI2110 */ |
sahilmgandhi | 18:6a4db94011d3 | 60 | } |
sahilmgandhi | 18:6a4db94011d3 | 61 | break; |
sahilmgandhi | 18:6a4db94011d3 | 62 | case PullDown: |
sahilmgandhi | 18:6a4db94011d3 | 63 | { |
sahilmgandhi | 18:6a4db94011d3 | 64 | GPIO_PULLEN_BITSET |= obj->mask; |
sahilmgandhi | 18:6a4db94011d3 | 65 | } |
sahilmgandhi | 18:6a4db94011d3 | 66 | break; |
sahilmgandhi | 18:6a4db94011d3 | 67 | case PullNone: |
sahilmgandhi | 18:6a4db94011d3 | 68 | { |
sahilmgandhi | 18:6a4db94011d3 | 69 | GPIO_PULLEN_BITCLR &= ~(obj->mask); |
sahilmgandhi | 18:6a4db94011d3 | 70 | } |
sahilmgandhi | 18:6a4db94011d3 | 71 | break; |
sahilmgandhi | 18:6a4db94011d3 | 72 | default: |
sahilmgandhi | 18:6a4db94011d3 | 73 | break; |
sahilmgandhi | 18:6a4db94011d3 | 74 | } |
sahilmgandhi | 18:6a4db94011d3 | 75 | } |
sahilmgandhi | 18:6a4db94011d3 | 76 | |
sahilmgandhi | 18:6a4db94011d3 | 77 | void port_dir(port_t *obj, PinDirection dir) |
sahilmgandhi | 18:6a4db94011d3 | 78 | { |
sahilmgandhi | 18:6a4db94011d3 | 79 | switch (dir) { |
sahilmgandhi | 18:6a4db94011d3 | 80 | case PIN_INPUT: |
sahilmgandhi | 18:6a4db94011d3 | 81 | { |
sahilmgandhi | 18:6a4db94011d3 | 82 | *(obj->reg_dir) &= ~(obj->mask); |
sahilmgandhi | 18:6a4db94011d3 | 83 | } |
sahilmgandhi | 18:6a4db94011d3 | 84 | break; |
sahilmgandhi | 18:6a4db94011d3 | 85 | case PIN_OUTPUT: |
sahilmgandhi | 18:6a4db94011d3 | 86 | { |
sahilmgandhi | 18:6a4db94011d3 | 87 | *(obj->reg_dir) |= obj->mask; |
sahilmgandhi | 18:6a4db94011d3 | 88 | /* TODO: do we need to set the drive strength? If so, how do we decide which way? */ |
sahilmgandhi | 18:6a4db94011d3 | 89 | /* obj->reg_drv |= obj->mask; */ |
sahilmgandhi | 18:6a4db94011d3 | 90 | } |
sahilmgandhi | 18:6a4db94011d3 | 91 | break; |
sahilmgandhi | 18:6a4db94011d3 | 92 | } |
sahilmgandhi | 18:6a4db94011d3 | 93 | } |
sahilmgandhi | 18:6a4db94011d3 | 94 | |
sahilmgandhi | 18:6a4db94011d3 | 95 | void port_write(port_t *obj, int value) |
sahilmgandhi | 18:6a4db94011d3 | 96 | { |
sahilmgandhi | 18:6a4db94011d3 | 97 | *(obj->reg_out) = value; |
sahilmgandhi | 18:6a4db94011d3 | 98 | } |
sahilmgandhi | 18:6a4db94011d3 | 99 | |
sahilmgandhi | 18:6a4db94011d3 | 100 | int port_read(port_t *obj) |
sahilmgandhi | 18:6a4db94011d3 | 101 | { |
sahilmgandhi | 18:6a4db94011d3 | 102 | return *(obj->reg_val); |
sahilmgandhi | 18:6a4db94011d3 | 103 | } |