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- /* mbed Microcontroller Library
- *******************************************************************************
- * Copyright (c) 2017, 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"
- #include "pin_device.h"
- extern GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx);
- const uint32_t ll_pin_defines[16] = {
- LL_GPIO_PIN_0,
- LL_GPIO_PIN_1,
- LL_GPIO_PIN_2,
- LL_GPIO_PIN_3,
- LL_GPIO_PIN_4,
- LL_GPIO_PIN_5,
- LL_GPIO_PIN_6,
- LL_GPIO_PIN_7,
- LL_GPIO_PIN_8,
- LL_GPIO_PIN_9,
- LL_GPIO_PIN_10,
- LL_GPIO_PIN_11,
- LL_GPIO_PIN_12,
- LL_GPIO_PIN_13,
- LL_GPIO_PIN_14,
- LL_GPIO_PIN_15
- };
- /**
- * Configure pin (mode, speed, output type and pull-up/pull-down)
- */
- void pin_function(PinName pin, int data)
- {
- MBED_ASSERT(pin != (PinName)NC);
- // Get the pin informations
- uint32_t mode = STM_PIN_FUNCTION(data);
- uint32_t afnum = STM_PIN_AFNUM(data);
- uint32_t port = STM_PORT(pin);
- uint32_t ll_pin = ll_pin_defines[STM_PIN(pin)];
- uint32_t ll_mode = 0;
- // Enable GPIO clock
- GPIO_TypeDef *gpio = Set_GPIO_Clock(port);
- /* Set default speed to high.
- * For most families there are dedicated registers so it is
- * not so important, register can be set at any time.
- * But for families like F1, speed only applies to output.
- */
- #if defined (TARGET_STM32F1)
- if (mode == STM_PIN_OUTPUT) {
- #endif
- LL_GPIO_SetPinSpeed(gpio, ll_pin, LL_GPIO_SPEED_FREQ_HIGH);
- #if defined (TARGET_STM32F1)
- }
- #endif
- switch (mode) {
- case STM_PIN_INPUT:
- ll_mode = LL_GPIO_MODE_INPUT;
- break;
- case STM_PIN_OUTPUT:
- ll_mode = LL_GPIO_MODE_OUTPUT;
- break;
- case STM_PIN_ALTERNATE:
- ll_mode = LL_GPIO_MODE_ALTERNATE;
- // In case of ALT function, also set he afnum
- stm_pin_SetAFPin(gpio, pin, afnum);
- break;
- case STM_PIN_ANALOG:
- ll_mode = LL_GPIO_MODE_ANALOG;
- break;
- default:
- MBED_ASSERT(0);
- break;
- }
- LL_GPIO_SetPinMode(gpio, ll_pin, ll_mode);
- #if defined(GPIO_ASCR_ASC0)
- /* For families where Analog Control ASC0 register is present */
- if (STM_PIN_ANALOG_CONTROL(data)) {
- LL_GPIO_EnablePinAnalogControl(gpio, ll_pin);
- } else {
- LL_GPIO_DisablePinAnalogControl(gpio, ll_pin);
- }
- #endif
- /* For now by default use Speed HIGH for output or alt modes */
- if ((mode == STM_PIN_OUTPUT) || (mode == STM_PIN_ALTERNATE)) {
- if (STM_PIN_OD(data)) {
- LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_OPENDRAIN);
- } else {
- LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
- }
- }
- stm_pin_PullConfig(gpio, ll_pin, STM_PIN_PUPD(data));
- stm_pin_DisconnectDebug(pin);
- }
- /**
- * 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 ll_pin = ll_pin_defines[STM_PIN(pin)];
- // Enable GPIO clock
- GPIO_TypeDef *gpio = Set_GPIO_Clock(port_index);
- uint32_t function = LL_GPIO_GetPinMode(gpio, ll_pin);
- if ((function == LL_GPIO_MODE_OUTPUT) || (function == LL_GPIO_MODE_ALTERNATE)) {
- if ((mode == OpenDrainNoPull) || (mode == OpenDrainPullUp) || (mode == OpenDrainPullDown)) {
- LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_OPENDRAIN);
- } else {
- LL_GPIO_SetPinOutputType(gpio, ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
- }
- }
- if ((mode == OpenDrainPullUp) || (mode == PullUp)) {
- stm_pin_PullConfig(gpio, ll_pin, GPIO_PULLUP);
- } else if ((mode == OpenDrainPullDown) || (mode == PullDown)) {
- stm_pin_PullConfig(gpio, ll_pin, GPIO_PULLDOWN);
- } else {
- stm_pin_PullConfig(gpio, ll_pin, GPIO_NOPULL);
- }
- }
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