Milen Pavlov / XRange_mbed_src

Mbed SDK for XRange SX1272 LoRa module

Dependents:   XRangePingPong XRange-LoRaWAN-lmic-app lora-transceiver

SX1272 LoRa RF module

https://www.netblocks.eu/xrange-sx1272-lora-datasheet/

targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/port_api.c@339:ac6f3fd999f3, 2016-01-07 (annotated)

Committer:
netblocks
Date:
Thu Jan 07 13:01:25 2016 +0000
Revision:
339:ac6f3fd999f3
Parent:
336:1e18a06a987b 
HSE_VALUE set for XTAL 16Mhz

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dudmuck 336:1e18a06a987b 1 /* mbed Microcontroller Library
dudmuck 336:1e18a06a987b 2 *******************************************************************************
dudmuck 336:1e18a06a987b 3 * Copyright (c) 2014, STMicroelectronics
dudmuck 336:1e18a06a987b 4 * All rights reserved.
dudmuck 336:1e18a06a987b 5 *
dudmuck 336:1e18a06a987b 6 * Redistribution and use in source and binary forms, with or without
dudmuck 336:1e18a06a987b 7 * modification, are permitted provided that the following conditions are met:
dudmuck 336:1e18a06a987b 8 *
dudmuck 336:1e18a06a987b 9 * 1. Redistributions of source code must retain the above copyright notice,
dudmuck 336:1e18a06a987b 10 * this list of conditions and the following disclaimer.
dudmuck 336:1e18a06a987b 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
dudmuck 336:1e18a06a987b 12 * this list of conditions and the following disclaimer in the documentation
dudmuck 336:1e18a06a987b 13 * and/or other materials provided with the distribution.
dudmuck 336:1e18a06a987b 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
dudmuck 336:1e18a06a987b 15 * may be used to endorse or promote products derived from this software
dudmuck 336:1e18a06a987b 16 * without specific prior written permission.
dudmuck 336:1e18a06a987b 17 *
dudmuck 336:1e18a06a987b 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
dudmuck 336:1e18a06a987b 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
dudmuck 336:1e18a06a987b 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
dudmuck 336:1e18a06a987b 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
dudmuck 336:1e18a06a987b 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
dudmuck 336:1e18a06a987b 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
dudmuck 336:1e18a06a987b 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
dudmuck 336:1e18a06a987b 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
dudmuck 336:1e18a06a987b 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
dudmuck 336:1e18a06a987b 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
dudmuck 336:1e18a06a987b 28 *******************************************************************************
dudmuck 336:1e18a06a987b 29 */
dudmuck 336:1e18a06a987b 30 #include "port_api.h"
dudmuck 336:1e18a06a987b 31 #include "pinmap.h"
dudmuck 336:1e18a06a987b 32 #include "gpio_api.h"
dudmuck 336:1e18a06a987b 33 #include "mbed_error.h"
dudmuck 336:1e18a06a987b 34
dudmuck 336:1e18a06a987b 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
dudmuck 336:1e18a06a987b 36
dudmuck 336:1e18a06a987b 37 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
dudmuck 336:1e18a06a987b 38
dudmuck 336:1e18a06a987b 39 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
dudmuck 336:1e18a06a987b 40 // low nibble = pin number
dudmuck 336:1e18a06a987b 41 PinName port_pin(PortName port, int pin_n)
dudmuck 336:1e18a06a987b 42 {
dudmuck 336:1e18a06a987b 43 return (PinName)(pin_n + (port << 4));
dudmuck 336:1e18a06a987b 44 }
dudmuck 336:1e18a06a987b 45
dudmuck 336:1e18a06a987b 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
dudmuck 336:1e18a06a987b 47 {
dudmuck 336:1e18a06a987b 48 uint32_t port_index = (uint32_t)port;
dudmuck 336:1e18a06a987b 49
dudmuck 336:1e18a06a987b 50 // Enable GPIO clock
dudmuck 336:1e18a06a987b 51 uint32_t gpio_add = Set_GPIO_Clock(port_index);
dudmuck 336:1e18a06a987b 52 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
dudmuck 336:1e18a06a987b 53
dudmuck 336:1e18a06a987b 54 // Fill PORT object structure for future use
dudmuck 336:1e18a06a987b 55 obj->port = port;
dudmuck 336:1e18a06a987b 56 obj->mask = mask;
dudmuck 336:1e18a06a987b 57 obj->direction = dir;
dudmuck 336:1e18a06a987b 58 obj->reg_in = &gpio->IDR;
dudmuck 336:1e18a06a987b 59 obj->reg_out = &gpio->ODR;
dudmuck 336:1e18a06a987b 60
dudmuck 336:1e18a06a987b 61 port_dir(obj, dir);
dudmuck 336:1e18a06a987b 62 }
dudmuck 336:1e18a06a987b 63
dudmuck 336:1e18a06a987b 64 void port_dir(port_t *obj, PinDirection dir)
dudmuck 336:1e18a06a987b 65 {
dudmuck 336:1e18a06a987b 66 uint32_t i;
dudmuck 336:1e18a06a987b 67 obj->direction = dir;
dudmuck 336:1e18a06a987b 68 for (i = 0; i < 16; i++) { // Process all pins
dudmuck 336:1e18a06a987b 69 if (obj->mask & (1 << i)) { // If the pin is used
dudmuck 336:1e18a06a987b 70 if (dir == PIN_OUTPUT) {
dudmuck 336:1e18a06a987b 71 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
dudmuck 336:1e18a06a987b 72 } else { // PIN_INPUT
dudmuck 336:1e18a06a987b 73 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
dudmuck 336:1e18a06a987b 74 }
dudmuck 336:1e18a06a987b 75 }
dudmuck 336:1e18a06a987b 76 }
dudmuck 336:1e18a06a987b 77 }
dudmuck 336:1e18a06a987b 78
dudmuck 336:1e18a06a987b 79 void port_mode(port_t *obj, PinMode mode)
dudmuck 336:1e18a06a987b 80 {
dudmuck 336:1e18a06a987b 81 uint32_t i;
dudmuck 336:1e18a06a987b 82 for (i = 0; i < 16; i++) { // Process all pins
dudmuck 336:1e18a06a987b 83 if (obj->mask & (1 << i)) { // If the pin is used
dudmuck 336:1e18a06a987b 84 pin_mode(port_pin(obj->port, i), mode);
dudmuck 336:1e18a06a987b 85 }
dudmuck 336:1e18a06a987b 86 }
dudmuck 336:1e18a06a987b 87 }
dudmuck 336:1e18a06a987b 88
dudmuck 336:1e18a06a987b 89 void port_write(port_t *obj, int value)
dudmuck 336:1e18a06a987b 90 {
dudmuck 336:1e18a06a987b 91 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
dudmuck 336:1e18a06a987b 92 }
dudmuck 336:1e18a06a987b 93
dudmuck 336:1e18a06a987b 94 int port_read(port_t *obj)
dudmuck 336:1e18a06a987b 95 {
dudmuck 336:1e18a06a987b 96 if (obj->direction == PIN_OUTPUT) {
dudmuck 336:1e18a06a987b 97 return (*obj->reg_out & obj->mask);
dudmuck 336:1e18a06a987b 98 } else { // PIN_INPUT
dudmuck 336:1e18a06a987b 99 return (*obj->reg_in & obj->mask);
dudmuck 336:1e18a06a987b 100 }
dudmuck 336:1e18a06a987b 101 }
dudmuck 336:1e18a06a987b 102
dudmuck 336:1e18a06a987b 103 #endif