1 /* mbed Microcontroller Library
2 *******************************************************************************
3 * Copyright (c) 2014, STMicroelectronics
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * 1. Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *******************************************************************************
30 #include "mbed_assert.h"
32 #include "PortNames.h"
33 #include "mbed_error.h"
35 // GPIO mode look-up table
36 static const uint32_t gpio_mode[13] = {
37 0x00000000, // 0 = GPIO_MODE_INPUT
38 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
39 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
40 0x00000002, // 3 = GPIO_MODE_AF_PP
41 0x00000012, // 4 = GPIO_MODE_AF_OD
42 0x00000003, // 5 = GPIO_MODE_ANALOG
43 0x10110000, // 6 = GPIO_MODE_IT_RISING
44 0x10210000, // 7 = GPIO_MODE_IT_FALLING
45 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
46 0x10120000, // 9 = GPIO_MODE_EVT_RISING
47 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
48 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
49 0x10000000 // 12 = Reset IT and EVT (not in STM32Cube HAL)
52 // Enable GPIO clock and return GPIO base address
53 uint32_t Set_GPIO_Clock(uint32_t port_idx)
55 uint32_t gpio_add = 0;
58 gpio_add = GPIOA_BASE;
62 gpio_add = GPIOB_BASE;
66 gpio_add = GPIOC_BASE;
70 gpio_add = GPIOD_BASE;
74 gpio_add = GPIOH_BASE;
78 error("Pinmap error: wrong port number.");
85 * Configure pin (mode, speed, output type and pull-up/pull-down)
87 void pin_function(PinName pin, int data)
89 MBED_ASSERT(pin != (PinName)NC);
90 // Get the pin informations
91 uint32_t mode = STM_PIN_MODE(data);
92 uint32_t pupd = STM_PIN_PUPD(data);
93 uint32_t afnum = STM_PIN_AFNUM(data);
95 uint32_t port_index = STM_PORT(pin);
96 uint32_t pin_index = STM_PIN(pin);
99 uint32_t gpio_add = Set_GPIO_Clock(port_index);
100 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
103 GPIO_InitTypeDef GPIO_InitStructure;
104 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
105 GPIO_InitStructure.Mode = gpio_mode[mode];
106 GPIO_InitStructure.Pull = pupd;
107 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
108 GPIO_InitStructure.Alternate = afnum;
109 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
111 // [TODO] Disconnect JTAG-DP + SW-DP signals.
112 // Warning: Need to reconnect under reset
113 //if ((pin == PA_13) || (pin == PA_14)) {
116 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
122 * Configure pin pull-up/pull-down
124 void pin_mode(PinName pin, PinMode mode)
126 MBED_ASSERT(pin != (PinName)NC);
127 uint32_t port_index = STM_PORT(pin);
128 uint32_t pin_index = STM_PIN(pin);
131 uint32_t gpio_add = Set_GPIO_Clock(port_index);
132 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
134 // Configure pull-up/pull-down resistors
135 uint32_t pupd = (uint32_t)mode;
138 pupd = 0; // Open-drain = No pull-up/No pull-down
140 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2)));
141 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));