- fix F411 F334 systeminit when HSI used - portinout always read IDR regardless of port direction
Fork of mbed-src by
targets/hal/TARGET_STM/TARGET_NUCLEO_F103RB/port_api.c@52:a51c77007319, 2013-12-02 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Dec 02 11:30:05 2013 +0000
- Revision:
- 52:a51c77007319
- Child:
- 70:c1fbde68b492
Synchronized with git revision 49df530ae72ce97ccc773d1f2c13b38e868e6abd
Full URL: https://github.com/mbedmicro/mbed/commit/49df530ae72ce97ccc773d1f2c13b38e868e6abd/
Add STMicroelectronics NUCLEO_F103RB target
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 52:a51c77007319 | 1 | /* mbed Microcontroller Library |
mbed_official | 52:a51c77007319 | 2 | * Copyright (c) 2006-2013 ARM Limited |
mbed_official | 52:a51c77007319 | 3 | * |
mbed_official | 52:a51c77007319 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 52:a51c77007319 | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 52:a51c77007319 | 6 | * You may obtain a copy of the License at |
mbed_official | 52:a51c77007319 | 7 | * |
mbed_official | 52:a51c77007319 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 52:a51c77007319 | 9 | * |
mbed_official | 52:a51c77007319 | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 52:a51c77007319 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 52:a51c77007319 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 52:a51c77007319 | 13 | * See the License for the specific language governing permissions and |
mbed_official | 52:a51c77007319 | 14 | * limitations under the License. |
mbed_official | 52:a51c77007319 | 15 | */ |
mbed_official | 52:a51c77007319 | 16 | #include "port_api.h" |
mbed_official | 52:a51c77007319 | 17 | #include "pinmap.h" |
mbed_official | 52:a51c77007319 | 18 | #include "gpio_api.h" |
mbed_official | 52:a51c77007319 | 19 | |
mbed_official | 52:a51c77007319 | 20 | #if DEVICE_PORTIN || DEVICE_PORTOUT |
mbed_official | 52:a51c77007319 | 21 | |
mbed_official | 52:a51c77007319 | 22 | // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...) |
mbed_official | 52:a51c77007319 | 23 | // low nibble = pin number |
mbed_official | 52:a51c77007319 | 24 | PinName port_pin(PortName port, int pin_n) { |
mbed_official | 52:a51c77007319 | 25 | return (PinName)(pin_n + (port << 4)); |
mbed_official | 52:a51c77007319 | 26 | } |
mbed_official | 52:a51c77007319 | 27 | |
mbed_official | 52:a51c77007319 | 28 | void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { |
mbed_official | 52:a51c77007319 | 29 | |
mbed_official | 52:a51c77007319 | 30 | uint32_t port_index = (uint32_t)port; // (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...) |
mbed_official | 52:a51c77007319 | 31 | |
mbed_official | 52:a51c77007319 | 32 | // Enable GPIO clock |
mbed_official | 52:a51c77007319 | 33 | RCC_APB2PeriphClockCmd((RCC_APB2Periph_GPIOA << port_index), ENABLE); |
mbed_official | 52:a51c77007319 | 34 | |
mbed_official | 52:a51c77007319 | 35 | // Get GPIO structure base address |
mbed_official | 52:a51c77007319 | 36 | GPIO_TypeDef *gpio = (GPIO_TypeDef *)(GPIOA_BASE + (port_index << 10)); |
mbed_official | 52:a51c77007319 | 37 | |
mbed_official | 52:a51c77007319 | 38 | // Fill PORT object structure for future use |
mbed_official | 52:a51c77007319 | 39 | obj->port = port; |
mbed_official | 52:a51c77007319 | 40 | obj->mask = mask; |
mbed_official | 52:a51c77007319 | 41 | obj->direction = dir; |
mbed_official | 52:a51c77007319 | 42 | obj->reg_in = &gpio->IDR; |
mbed_official | 52:a51c77007319 | 43 | obj->reg_out = &gpio->ODR; |
mbed_official | 52:a51c77007319 | 44 | |
mbed_official | 52:a51c77007319 | 45 | port_dir(obj, dir); |
mbed_official | 52:a51c77007319 | 46 | } |
mbed_official | 52:a51c77007319 | 47 | |
mbed_official | 52:a51c77007319 | 48 | void port_dir(port_t *obj, PinDirection dir) { |
mbed_official | 52:a51c77007319 | 49 | uint32_t i; |
mbed_official | 52:a51c77007319 | 50 | obj->direction = dir; |
mbed_official | 52:a51c77007319 | 51 | for (i = 0; i < 16; i++) { // Process all pins |
mbed_official | 52:a51c77007319 | 52 | if (obj->mask & (1 << i)) { // If the pin is used |
mbed_official | 52:a51c77007319 | 53 | if (dir == PIN_OUTPUT) { |
mbed_official | 52:a51c77007319 | 54 | pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_Out_PP, 0)); |
mbed_official | 52:a51c77007319 | 55 | } |
mbed_official | 52:a51c77007319 | 56 | else { // PIN_INPUT |
mbed_official | 52:a51c77007319 | 57 | pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_IN_FLOATING, 0)); |
mbed_official | 52:a51c77007319 | 58 | } |
mbed_official | 52:a51c77007319 | 59 | } |
mbed_official | 52:a51c77007319 | 60 | } |
mbed_official | 52:a51c77007319 | 61 | } |
mbed_official | 52:a51c77007319 | 62 | |
mbed_official | 52:a51c77007319 | 63 | void port_mode(port_t *obj, PinMode mode) { |
mbed_official | 52:a51c77007319 | 64 | uint32_t i; |
mbed_official | 52:a51c77007319 | 65 | for (i = 0; i < 16; i++) { // Process all pins |
mbed_official | 52:a51c77007319 | 66 | if (obj->mask & (1 << i)) { // If the pin is used |
mbed_official | 52:a51c77007319 | 67 | pin_mode(port_pin(obj->port, i), mode); |
mbed_official | 52:a51c77007319 | 68 | } |
mbed_official | 52:a51c77007319 | 69 | } |
mbed_official | 52:a51c77007319 | 70 | } |
mbed_official | 52:a51c77007319 | 71 | |
mbed_official | 52:a51c77007319 | 72 | void port_write(port_t *obj, int value) { |
mbed_official | 52:a51c77007319 | 73 | *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask); |
mbed_official | 52:a51c77007319 | 74 | } |
mbed_official | 52:a51c77007319 | 75 | |
mbed_official | 52:a51c77007319 | 76 | int port_read(port_t *obj) { |
mbed_official | 52:a51c77007319 | 77 | if (obj->direction == PIN_OUTPUT) { |
mbed_official | 52:a51c77007319 | 78 | return (*obj->reg_out & obj->mask); |
mbed_official | 52:a51c77007319 | 79 | } |
mbed_official | 52:a51c77007319 | 80 | else { // PIN_INPUT |
mbed_official | 52:a51c77007319 | 81 | return (*obj->reg_in & obj->mask); |
mbed_official | 52:a51c77007319 | 82 | } |
mbed_official | 52:a51c77007319 | 83 | } |
mbed_official | 52:a51c77007319 | 84 | |
mbed_official | 52:a51c77007319 | 85 | #endif |