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Teacup_Firmware/mbed-pinmap_stm32.c

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/* 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.
*******************************************************************************
*/
/*
Notes for Teacup:
Copied from $(MBED)/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/pinmap.c.
Used only to get things running quickly. Without serial it's almost
impossible to see wether code changes work. Should go away soon, because
all this MBED stuff is too bloated for Teacup's purposes.
- Prefixed names of #include files with mbed- to match the names of the
copies in the Teacup repo.
- Wrapped the whole file in #ifdef __ARMEL__ to not cause conflicts with
AVR builds.
*/
#ifdef __ARM_STM32F411__
#include "mbed-pinmap.h"
#include "mbed-PortNames_stm32.h"
#include "mbed-mbed_error.h"
// GPIO mode look-up table
static const uint32_t gpio_mode[13] = {
0x00000000, // 0 = GPIO_MODE_INPUT
0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
0x00000002, // 3 = GPIO_MODE_AF_PP
0x00000012, // 4 = GPIO_MODE_AF_OD
0x00000003, // 5 = GPIO_MODE_ANALOG
0x10110000, // 6 = GPIO_MODE_IT_RISING
0x10210000, // 7 = GPIO_MODE_IT_FALLING
0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
0x10120000, // 9 = GPIO_MODE_EVT_RISING
0x10220000, // 10 = GPIO_MODE_EVT_FALLING
0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
0x10000000 // 12 = Reset GPIO_MODE_IT_EVT
};
// 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;
#if defined GPIOD_BASE
case PortD:
gpio_add = GPIOD_BASE;
__GPIOD_CLK_ENABLE();
break;
#endif
#if defined GPIOE_BASE
case PortE:
gpio_add = GPIOE_BASE;
__GPIOE_CLK_ENABLE();
break;
#endif
#if defined GPIOF_BASE
case PortF:
gpio_add = GPIOF_BASE;
__GPIOF_CLK_ENABLE();
break;
#endif
#if defined GPIOG_BASE
case PortG:
gpio_add = GPIOG_BASE;
__GPIOG_CLK_ENABLE();
break;
#endif
#if defined GPIOH_BASE
case PortH:
gpio_add = GPIOH_BASE;
__GPIOH_CLK_ENABLE();
break;
#endif
#if defined GPIOI_BASE
case PortI:
gpio_add = GPIOI_BASE;
__GPIOI_CLK_ENABLE();
break;
#endif
#if defined GPIOJ_BASE
case PortJ:
gpio_add = GPIOJ_BASE;
__GPIOJ_CLK_ENABLE();
break;
#endif
#if defined GPIOK_BASE
case PortK:
gpio_add = GPIOK_BASE;
__GPIOK_CLK_ENABLE();
break;
#endif
default:
error("Pinmap error: wrong port number.");
break;
}
return gpio_add;
}
/**
* Configure pin (mode, speed, output type and pull-up/pull-down)
*/
void pin_function(PinName pin, int data)
{
// 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;
// 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;
GPIO_InitStructure.Alternate = afnum;
HAL_GPIO_Init(gpio, &GPIO_InitStructure);
// [TODO] Disconnect JTAG-DP + SW-DP signals.
// Warning: Need to reconnect under reset
//if ((pin == PA_13) || (pin == PA_14)) {
//
//}
//if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
//
//}
}
/**
* Configure pin pull-up/pull-down
*/
void pin_mode(PinName pin, PinMode mode)
{
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 pull-up/pull-down resistors
uint32_t pupd = (uint32_t)mode;
if (pupd > 2)
pupd = 0; // Open-drain = No pull-up/No pull-down
gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
}
#endif
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