+++ /dev/null
-/* mbed Microcontroller Library
- *******************************************************************************
- * Copyright (c) 2014, STMicroelectronics
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. Neither the name of STMicroelectronics nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *******************************************************************************
- */
-#include "mbed_assert.h"
-#include "pinmap.h"
-#include "PortNames.h"
-#include "mbed_error.h"
-
-// GPIO mode look-up table
-// Warning: the elements order must be the same as the one defined in PinNames.h
-static const uint32_t gpio_mode[13] = {
- GPIO_MODE_INPUT, // 0 = STM_MODE_INPUT
- GPIO_MODE_OUTPUT_PP, // 1 = STM_MODE_OUTPUT_PP
- GPIO_MODE_OUTPUT_OD, // 2 = STM_MODE_OUTPUT_OD
- GPIO_MODE_AF_PP, // 3 = STM_MODE_AF_PP
- GPIO_MODE_AF_OD, // 4 = STM_MODE_AF_OD
- GPIO_MODE_ANALOG, // 5 = STM_MODE_ANALOG
- GPIO_MODE_IT_RISING, // 6 = STM_MODE_IT_RISING
- GPIO_MODE_IT_FALLING, // 7 = STM_MODE_IT_FALLING
- GPIO_MODE_IT_RISING_FALLING, // 8 = STM_MODE_IT_RISING_FALLING
- GPIO_MODE_EVT_RISING, // 9 = STM_MODE_EVT_RISING
- GPIO_MODE_EVT_FALLING, // 10 = STM_MODE_EVT_FALLING
- GPIO_MODE_EVT_RISING_FALLING, // 11 = STM_MODE_EVT_RISING_FALLING
- 0x10000000 // 12 = STM_MODE_IT_EVT_RESET (not in STM32Cube HAL)
-};
-
-// Enable GPIO clock and return GPIO base address
-uint32_t Set_GPIO_Clock(uint32_t port_idx)
-{
- uint32_t gpio_add = 0;
- switch (port_idx) {
- case PortA:
- gpio_add = GPIOA_BASE;
- __GPIOA_CLK_ENABLE();
- break;
- case PortB:
- gpio_add = GPIOB_BASE;
- __GPIOB_CLK_ENABLE();
- break;
- case PortC:
- gpio_add = GPIOC_BASE;
- __GPIOC_CLK_ENABLE();
- break;
- case PortD:
- gpio_add = GPIOD_BASE;
- __GPIOD_CLK_ENABLE();
- break;
- default:
- error("Pinmap error: wrong port number.");
- break;
- }
- return gpio_add;
-}
-
-/**
- * Configure pin (input, output, alternate function or analog) + output speed + AF
- */
-void pin_function(PinName pin, int data)
-{
- MBED_ASSERT(pin != (PinName)NC);
- // Get the pin informations
- uint32_t mode = STM_PIN_MODE(data);
- uint32_t pupd = STM_PIN_PUPD(data);
- uint32_t afnum = STM_PIN_AFNUM(data);
-
- uint32_t port_index = STM_PORT(pin);
- uint32_t pin_index = STM_PIN(pin);
-
- // Enable GPIO clock
- uint32_t gpio_add = Set_GPIO_Clock(port_index);
- GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
-
- // Enable AFIO clock
- __HAL_RCC_AFIO_CLK_ENABLE();
-
- // Configure Alternate Function
- // Warning: Must be done before the GPIO is initialized
- if (afnum > 0) {
- switch (afnum) {
- case 1: // Remap SPI1
- __HAL_AFIO_REMAP_SPI1_ENABLE();
- break;
- case 2: // Remap I2C1
- __HAL_AFIO_REMAP_I2C1_ENABLE();
- break;
- case 3: // Remap USART1
- __HAL_AFIO_REMAP_USART1_ENABLE();
- break;
- case 4: // Remap USART2
- __HAL_AFIO_REMAP_USART2_ENABLE();
- break;
- case 5: // Partial Remap USART3
- __HAL_AFIO_REMAP_USART3_PARTIAL();
- break;
- case 6: // Partial Remap TIM1
- __HAL_AFIO_REMAP_TIM1_PARTIAL();
- break;
- case 7: // Partial Remap TIM3
- __HAL_AFIO_REMAP_TIM3_PARTIAL();
- break;
- case 8: // Full Remap TIM2
- __HAL_AFIO_REMAP_TIM2_ENABLE();
- break;
- case 9: // Full Remap TIM3
- __HAL_AFIO_REMAP_TIM3_ENABLE();
- break;
- default:
- break;
- }
- }
-
- // Configure GPIO
- GPIO_InitTypeDef GPIO_InitStructure;
- GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
- GPIO_InitStructure.Mode = gpio_mode[mode];
- GPIO_InitStructure.Pull = pupd;
- GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
- HAL_GPIO_Init(gpio, &GPIO_InitStructure);
-
- // Disconnect JTAG-DP + SW-DP signals.
- // Warning: Need to reconnect under reset
- if ((pin == PA_13) || (pin == PA_14)) {
- __HAL_AFIO_REMAP_SWJ_DISABLE(); // JTAG-DP Disabled and SW-DP Disabled
- }
- if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
- __HAL_AFIO_REMAP_SWJ_NOJTAG(); // JTAG-DP Disabled and SW-DP enabled
- }
-}
-
-/**
- * Configure pin pull-up/pull-down
- */
-void pin_mode(PinName pin, PinMode mode)
-{
- MBED_ASSERT(pin != (PinName)NC);
-
- uint32_t port_index = STM_PORT(pin);
- uint32_t pin_index = STM_PIN(pin);
-
- // Enable GPIO clock
- uint32_t gpio_add = Set_GPIO_Clock(port_index);
- GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
-
- // Configure open-drain and pull-up/down
- switch (mode) {
- case PullNone:
- break;
- case PullUp:
- case PullDown:
- // Set pull-up / pull-down for Input mode
- if (pin_index < 8) {
- if ((gpio->CRL & (0x03 << (pin_index * 4))) == 0) { // MODE bits = Input mode
- gpio->CRL |= (0x08 << (pin_index * 4)); // Set pull-up / pull-down
- }
- } else {
- if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) == 0) { // MODE bits = Input mode
- gpio->CRH |= (0x08 << ((pin_index % 8) * 4)); // Set pull-up / pull-down
- }
- }
- break;
- case OpenDrain:
- // Set open-drain for Output mode (General Purpose or Alternate Function)
- if (pin_index < 8) {
- if ((gpio->CRL & (0x03 << (pin_index * 4))) > 0) { // MODE bits = Output mode
- gpio->CRL |= (0x04 << (pin_index * 4)); // Set open-drain
- }
- } else {
- if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) > 0) { // MODE bits = Output mode
- gpio->CRH |= (0x04 << ((pin_index % 8) * 4)); // Set open-drain
- }
- }
- break;
- default:
- break;
- }
-}
projects / qmk_firmware.git / blobdiff