eunkyoung kim / mbed-src

mbed library sources modify the rtc/i2c

Dependents:   SSD1306_smart_watch

Fork of mbed-src by eunkyoung kim

targets/hal/TARGET_STM/TARGET_STM32L0/pinmap.c@577:545d200432a1, 2015-06-29 (annotated)

Committer:
eunkyoungkim
Date:
Mon Jun 29 05:49:52 2015 +0000
Revision:
577:545d200432a1
Parent:
531:47d2b67c511f 
modify the i2c.c/i2c.h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 376:cb4d9db17537 1 /* mbed Microcontroller Library
mbed_official 376:cb4d9db17537 2 *******************************************************************************
mbed_official 531:47d2b67c511f 3 * Copyright (c) 2015, STMicroelectronics
mbed_official 376:cb4d9db17537 4 * All rights reserved.
mbed_official 376:cb4d9db17537 5 *
mbed_official 376:cb4d9db17537 6 * Redistribution and use in source and binary forms, with or without
mbed_official 376:cb4d9db17537 7 * modification, are permitted provided that the following conditions are met:
mbed_official 376:cb4d9db17537 8 *
mbed_official 376:cb4d9db17537 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 376:cb4d9db17537 10 * this list of conditions and the following disclaimer.
mbed_official 376:cb4d9db17537 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 376:cb4d9db17537 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 376:cb4d9db17537 13 * and/or other materials provided with the distribution.
mbed_official 376:cb4d9db17537 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 376:cb4d9db17537 15 * may be used to endorse or promote products derived from this software
mbed_official 376:cb4d9db17537 16 * without specific prior written permission.
mbed_official 376:cb4d9db17537 17 *
mbed_official 376:cb4d9db17537 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 376:cb4d9db17537 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 376:cb4d9db17537 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 376:cb4d9db17537 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 376:cb4d9db17537 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 376:cb4d9db17537 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 376:cb4d9db17537 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 376:cb4d9db17537 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 376:cb4d9db17537 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 376:cb4d9db17537 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 376:cb4d9db17537 28 *******************************************************************************
mbed_official 376:cb4d9db17537 29 */
mbed_official 376:cb4d9db17537 30 #include "mbed_assert.h"
mbed_official 376:cb4d9db17537 31 #include "pinmap.h"
mbed_official 376:cb4d9db17537 32 #include "PortNames.h"
mbed_official 376:cb4d9db17537 33 #include "mbed_error.h"
mbed_official 376:cb4d9db17537 34
mbed_official 376:cb4d9db17537 35 // GPIO mode look-up table
mbed_official 531:47d2b67c511f 36 // Warning: order must be the same as the one defined in PinNames.h !!!
mbed_official 376:cb4d9db17537 37 static const uint32_t gpio_mode[13] = {
mbed_official 376:cb4d9db17537 38 0x00000000, // 0 = GPIO_MODE_INPUT
mbed_official 376:cb4d9db17537 39 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP
mbed_official 376:cb4d9db17537 40 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD
mbed_official 376:cb4d9db17537 41 0x00000002, // 3 = GPIO_MODE_AF_PP
mbed_official 376:cb4d9db17537 42 0x00000012, // 4 = GPIO_MODE_AF_OD
mbed_official 376:cb4d9db17537 43 0x00000003, // 5 = GPIO_MODE_ANALOG
mbed_official 376:cb4d9db17537 44 0x10110000, // 6 = GPIO_MODE_IT_RISING
mbed_official 376:cb4d9db17537 45 0x10210000, // 7 = GPIO_MODE_IT_FALLING
mbed_official 376:cb4d9db17537 46 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING
mbed_official 376:cb4d9db17537 47 0x10120000, // 9 = GPIO_MODE_EVT_RISING
mbed_official 376:cb4d9db17537 48 0x10220000, // 10 = GPIO_MODE_EVT_FALLING
mbed_official 376:cb4d9db17537 49 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING
mbed_official 376:cb4d9db17537 50 0x10000000 // 12 = Reset IT and EVT (not in STM32Cube HAL)
mbed_official 376:cb4d9db17537 51 };
mbed_official 376:cb4d9db17537 52
mbed_official 376:cb4d9db17537 53 // Enable GPIO clock and return GPIO base address
mbed_official 439:c4382fcbbaed 54 uint32_t Set_GPIO_Clock(uint32_t port_idx)
mbed_official 439:c4382fcbbaed 55 {
mbed_official 376:cb4d9db17537 56 uint32_t gpio_add = 0;
mbed_official 376:cb4d9db17537 57 switch (port_idx) {
mbed_official 376:cb4d9db17537 58 case PortA:
mbed_official 376:cb4d9db17537 59 gpio_add = GPIOA_BASE;
mbed_official 376:cb4d9db17537 60 __GPIOA_CLK_ENABLE();
mbed_official 376:cb4d9db17537 61 break;
mbed_official 376:cb4d9db17537 62 case PortB:
mbed_official 376:cb4d9db17537 63 gpio_add = GPIOB_BASE;
mbed_official 376:cb4d9db17537 64 __GPIOB_CLK_ENABLE();
mbed_official 376:cb4d9db17537 65 break;
mbed_official 531:47d2b67c511f 66 #if defined(GPIOC_BASE)
mbed_official 376:cb4d9db17537 67 case PortC:
mbed_official 376:cb4d9db17537 68 gpio_add = GPIOC_BASE;
mbed_official 376:cb4d9db17537 69 __GPIOC_CLK_ENABLE();
mbed_official 376:cb4d9db17537 70 break;
mbed_official 531:47d2b67c511f 71 #endif
mbed_official 531:47d2b67c511f 72 #if defined(GPIOD_BASE)
mbed_official 376:cb4d9db17537 73 case PortD:
mbed_official 376:cb4d9db17537 74 gpio_add = GPIOD_BASE;
mbed_official 376:cb4d9db17537 75 __GPIOD_CLK_ENABLE();
mbed_official 376:cb4d9db17537 76 break;
mbed_official 531:47d2b67c511f 77 #endif
mbed_official 531:47d2b67c511f 78 #if defined(GPIOH_BASE)
mbed_official 376:cb4d9db17537 79 case PortH:
mbed_official 376:cb4d9db17537 80 gpio_add = GPIOH_BASE;
mbed_official 376:cb4d9db17537 81 __GPIOH_CLK_ENABLE();
mbed_official 376:cb4d9db17537 82 break;
mbed_official 531:47d2b67c511f 83 #endif
mbed_official 376:cb4d9db17537 84 default:
mbed_official 376:cb4d9db17537 85 error("Pinmap error: wrong port number.");
mbed_official 376:cb4d9db17537 86 break;
mbed_official 376:cb4d9db17537 87 }
mbed_official 376:cb4d9db17537 88 return gpio_add;
mbed_official 376:cb4d9db17537 89 }
mbed_official 376:cb4d9db17537 90
mbed_official 376:cb4d9db17537 91 /**
mbed_official 376:cb4d9db17537 92 * Configure pin (mode, speed, output type and pull-up/pull-down)
mbed_official 376:cb4d9db17537 93 */
mbed_official 439:c4382fcbbaed 94 void pin_function(PinName pin, int data)
mbed_official 439:c4382fcbbaed 95 {
mbed_official 376:cb4d9db17537 96 MBED_ASSERT(pin != (PinName)NC);
mbed_official 376:cb4d9db17537 97 // Get the pin informations
mbed_official 376:cb4d9db17537 98 uint32_t mode = STM_PIN_MODE(data);
mbed_official 376:cb4d9db17537 99 uint32_t pupd = STM_PIN_PUPD(data);
mbed_official 376:cb4d9db17537 100 uint32_t afnum = STM_PIN_AFNUM(data);
mbed_official 376:cb4d9db17537 101
mbed_official 376:cb4d9db17537 102 uint32_t port_index = STM_PORT(pin);
mbed_official 376:cb4d9db17537 103 uint32_t pin_index = STM_PIN(pin);
mbed_official 376:cb4d9db17537 104
mbed_official 376:cb4d9db17537 105 // Enable GPIO clock
mbed_official 376:cb4d9db17537 106 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 376:cb4d9db17537 107 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 376:cb4d9db17537 108
mbed_official 376:cb4d9db17537 109 // Configure GPIO
mbed_official 376:cb4d9db17537 110 GPIO_InitTypeDef GPIO_InitStructure;
mbed_official 376:cb4d9db17537 111 GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index);
mbed_official 376:cb4d9db17537 112 GPIO_InitStructure.Mode = gpio_mode[mode];
mbed_official 376:cb4d9db17537 113 GPIO_InitStructure.Pull = pupd;
mbed_official 376:cb4d9db17537 114 GPIO_InitStructure.Speed = GPIO_SPEED_HIGH;
mbed_official 376:cb4d9db17537 115 GPIO_InitStructure.Alternate = afnum;
mbed_official 376:cb4d9db17537 116 HAL_GPIO_Init(gpio, &GPIO_InitStructure);
mbed_official 376:cb4d9db17537 117
mbed_official 376:cb4d9db17537 118 // [TODO] Disconnect JTAG-DP + SW-DP signals.
mbed_official 376:cb4d9db17537 119 // Warning: Need to reconnect under reset
mbed_official 376:cb4d9db17537 120 //if ((pin == PA_13) || (pin == PA_14)) {
mbed_official 376:cb4d9db17537 121 //
mbed_official 376:cb4d9db17537 122 //}
mbed_official 376:cb4d9db17537 123 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
mbed_official 376:cb4d9db17537 124 //
mbed_official 376:cb4d9db17537 125 //}
mbed_official 376:cb4d9db17537 126 }
mbed_official 376:cb4d9db17537 127
mbed_official 376:cb4d9db17537 128 /**
mbed_official 376:cb4d9db17537 129 * Configure pin pull-up/pull-down
mbed_official 376:cb4d9db17537 130 */
mbed_official 439:c4382fcbbaed 131 void pin_mode(PinName pin, PinMode mode)
mbed_official 439:c4382fcbbaed 132 {
mbed_official 376:cb4d9db17537 133 MBED_ASSERT(pin != (PinName)NC);
mbed_official 376:cb4d9db17537 134 uint32_t port_index = STM_PORT(pin);
mbed_official 376:cb4d9db17537 135 uint32_t pin_index = STM_PIN(pin);
mbed_official 376:cb4d9db17537 136
mbed_official 376:cb4d9db17537 137 // Enable GPIO clock
mbed_official 376:cb4d9db17537 138 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 376:cb4d9db17537 139 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 376:cb4d9db17537 140
mbed_official 376:cb4d9db17537 141 // Configure pull-up/pull-down resistors
mbed_official 376:cb4d9db17537 142 uint32_t pupd = (uint32_t)mode;
mbed_official 376:cb4d9db17537 143 if (pupd > 2)
mbed_official 439:c4382fcbbaed 144 {
mbed_official 376:cb4d9db17537 145 pupd = 0; // Open-drain = No pull-up/No pull-down
mbed_official 439:c4382fcbbaed 146 }
mbed_official 376:cb4d9db17537 147 gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPD0 << (pin_index * 2)));
mbed_official 376:cb4d9db17537 148 gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2));
mbed_official 376:cb4d9db17537 149
mbed_official 376:cb4d9db17537 150 }