USB Serial application
Fork of USBSerial_HelloWorld by
mbed-dev/targets/TARGET_STM/TARGET_STM32F2/pinmap.c@10:41552d038a69, 2017-01-10 (annotated)
- Committer:
- Zaitsev
- Date:
- Tue Jan 10 20:42:26 2017 +0000
- Revision:
- 10:41552d038a69
USB Serial bi-directional bridge
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Zaitsev | 10:41552d038a69 | 1 | /* mbed Microcontroller Library |
Zaitsev | 10:41552d038a69 | 2 | ******************************************************************************* |
Zaitsev | 10:41552d038a69 | 3 | * Copyright (c) 2016, STMicroelectronics |
Zaitsev | 10:41552d038a69 | 4 | * All rights reserved. |
Zaitsev | 10:41552d038a69 | 5 | * |
Zaitsev | 10:41552d038a69 | 6 | * Redistribution and use in source and binary forms, with or without |
Zaitsev | 10:41552d038a69 | 7 | * modification, are permitted provided that the following conditions are met: |
Zaitsev | 10:41552d038a69 | 8 | * |
Zaitsev | 10:41552d038a69 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
Zaitsev | 10:41552d038a69 | 10 | * this list of conditions and the following disclaimer. |
Zaitsev | 10:41552d038a69 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
Zaitsev | 10:41552d038a69 | 12 | * this list of conditions and the following disclaimer in the documentation |
Zaitsev | 10:41552d038a69 | 13 | * and/or other materials provided with the distribution. |
Zaitsev | 10:41552d038a69 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
Zaitsev | 10:41552d038a69 | 15 | * may be used to endorse or promote products derived from this software |
Zaitsev | 10:41552d038a69 | 16 | * without specific prior written permission. |
Zaitsev | 10:41552d038a69 | 17 | * |
Zaitsev | 10:41552d038a69 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
Zaitsev | 10:41552d038a69 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
Zaitsev | 10:41552d038a69 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
Zaitsev | 10:41552d038a69 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
Zaitsev | 10:41552d038a69 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
Zaitsev | 10:41552d038a69 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
Zaitsev | 10:41552d038a69 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
Zaitsev | 10:41552d038a69 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
Zaitsev | 10:41552d038a69 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
Zaitsev | 10:41552d038a69 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Zaitsev | 10:41552d038a69 | 28 | ******************************************************************************* |
Zaitsev | 10:41552d038a69 | 29 | */ |
Zaitsev | 10:41552d038a69 | 30 | #include "mbed_assert.h" |
Zaitsev | 10:41552d038a69 | 31 | #include "pinmap.h" |
Zaitsev | 10:41552d038a69 | 32 | #include "PortNames.h" |
Zaitsev | 10:41552d038a69 | 33 | #include "mbed_error.h" |
Zaitsev | 10:41552d038a69 | 34 | |
Zaitsev | 10:41552d038a69 | 35 | // GPIO mode look-up table |
Zaitsev | 10:41552d038a69 | 36 | static const uint32_t gpio_mode[13] = { |
Zaitsev | 10:41552d038a69 | 37 | 0x00000000, // 0 = GPIO_MODE_INPUT |
Zaitsev | 10:41552d038a69 | 38 | 0x00000001, // 1 = GPIO_MODE_OUTPUT_PP |
Zaitsev | 10:41552d038a69 | 39 | 0x00000011, // 2 = GPIO_MODE_OUTPUT_OD |
Zaitsev | 10:41552d038a69 | 40 | 0x00000002, // 3 = GPIO_MODE_AF_PP |
Zaitsev | 10:41552d038a69 | 41 | 0x00000012, // 4 = GPIO_MODE_AF_OD |
Zaitsev | 10:41552d038a69 | 42 | 0x00000003, // 5 = GPIO_MODE_ANALOG |
Zaitsev | 10:41552d038a69 | 43 | 0x10110000, // 6 = GPIO_MODE_IT_RISING |
Zaitsev | 10:41552d038a69 | 44 | 0x10210000, // 7 = GPIO_MODE_IT_FALLING |
Zaitsev | 10:41552d038a69 | 45 | 0x10310000, // 8 = GPIO_MODE_IT_RISING_FALLING |
Zaitsev | 10:41552d038a69 | 46 | 0x10120000, // 9 = GPIO_MODE_EVT_RISING |
Zaitsev | 10:41552d038a69 | 47 | 0x10220000, // 10 = GPIO_MODE_EVT_FALLING |
Zaitsev | 10:41552d038a69 | 48 | 0x10320000, // 11 = GPIO_MODE_EVT_RISING_FALLING |
Zaitsev | 10:41552d038a69 | 49 | 0x10000000 // 12 = Reset GPIO_MODE_IT_EVT |
Zaitsev | 10:41552d038a69 | 50 | }; |
Zaitsev | 10:41552d038a69 | 51 | |
Zaitsev | 10:41552d038a69 | 52 | // Enable GPIO clock and return GPIO base address |
Zaitsev | 10:41552d038a69 | 53 | uint32_t Set_GPIO_Clock(uint32_t port_idx) |
Zaitsev | 10:41552d038a69 | 54 | { |
Zaitsev | 10:41552d038a69 | 55 | uint32_t gpio_add = 0; |
Zaitsev | 10:41552d038a69 | 56 | switch (port_idx) { |
Zaitsev | 10:41552d038a69 | 57 | case PortA: |
Zaitsev | 10:41552d038a69 | 58 | gpio_add = GPIOA_BASE; |
Zaitsev | 10:41552d038a69 | 59 | __GPIOA_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 60 | break; |
Zaitsev | 10:41552d038a69 | 61 | case PortB: |
Zaitsev | 10:41552d038a69 | 62 | gpio_add = GPIOB_BASE; |
Zaitsev | 10:41552d038a69 | 63 | __GPIOB_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 64 | break; |
Zaitsev | 10:41552d038a69 | 65 | case PortC: |
Zaitsev | 10:41552d038a69 | 66 | gpio_add = GPIOC_BASE; |
Zaitsev | 10:41552d038a69 | 67 | __GPIOC_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 68 | break; |
Zaitsev | 10:41552d038a69 | 69 | #if defined GPIOD_BASE |
Zaitsev | 10:41552d038a69 | 70 | case PortD: |
Zaitsev | 10:41552d038a69 | 71 | gpio_add = GPIOD_BASE; |
Zaitsev | 10:41552d038a69 | 72 | __GPIOD_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 73 | break; |
Zaitsev | 10:41552d038a69 | 74 | #endif |
Zaitsev | 10:41552d038a69 | 75 | #if defined GPIOE_BASE |
Zaitsev | 10:41552d038a69 | 76 | case PortE: |
Zaitsev | 10:41552d038a69 | 77 | gpio_add = GPIOE_BASE; |
Zaitsev | 10:41552d038a69 | 78 | __GPIOE_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 79 | break; |
Zaitsev | 10:41552d038a69 | 80 | #endif |
Zaitsev | 10:41552d038a69 | 81 | #if defined GPIOF_BASE |
Zaitsev | 10:41552d038a69 | 82 | case PortF: |
Zaitsev | 10:41552d038a69 | 83 | gpio_add = GPIOF_BASE; |
Zaitsev | 10:41552d038a69 | 84 | __GPIOF_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 85 | break; |
Zaitsev | 10:41552d038a69 | 86 | #endif |
Zaitsev | 10:41552d038a69 | 87 | #if defined GPIOG_BASE |
Zaitsev | 10:41552d038a69 | 88 | case PortG: |
Zaitsev | 10:41552d038a69 | 89 | gpio_add = GPIOG_BASE; |
Zaitsev | 10:41552d038a69 | 90 | __GPIOG_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 91 | break; |
Zaitsev | 10:41552d038a69 | 92 | #endif |
Zaitsev | 10:41552d038a69 | 93 | #if defined GPIOH_BASE |
Zaitsev | 10:41552d038a69 | 94 | case PortH: |
Zaitsev | 10:41552d038a69 | 95 | gpio_add = GPIOH_BASE; |
Zaitsev | 10:41552d038a69 | 96 | __GPIOH_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 97 | break; |
Zaitsev | 10:41552d038a69 | 98 | #endif |
Zaitsev | 10:41552d038a69 | 99 | #if defined GPIOI_BASE |
Zaitsev | 10:41552d038a69 | 100 | case PortI: |
Zaitsev | 10:41552d038a69 | 101 | gpio_add = GPIOI_BASE; |
Zaitsev | 10:41552d038a69 | 102 | __GPIOI_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 103 | break; |
Zaitsev | 10:41552d038a69 | 104 | #endif |
Zaitsev | 10:41552d038a69 | 105 | #if defined GPIOJ_BASE |
Zaitsev | 10:41552d038a69 | 106 | case PortJ: |
Zaitsev | 10:41552d038a69 | 107 | gpio_add = GPIOJ_BASE; |
Zaitsev | 10:41552d038a69 | 108 | __GPIOJ_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 109 | break; |
Zaitsev | 10:41552d038a69 | 110 | #endif |
Zaitsev | 10:41552d038a69 | 111 | #if defined GPIOK_BASE |
Zaitsev | 10:41552d038a69 | 112 | case PortK: |
Zaitsev | 10:41552d038a69 | 113 | gpio_add = GPIOK_BASE; |
Zaitsev | 10:41552d038a69 | 114 | __GPIOK_CLK_ENABLE(); |
Zaitsev | 10:41552d038a69 | 115 | break; |
Zaitsev | 10:41552d038a69 | 116 | #endif |
Zaitsev | 10:41552d038a69 | 117 | default: |
Zaitsev | 10:41552d038a69 | 118 | error("Pinmap error: wrong port number."); |
Zaitsev | 10:41552d038a69 | 119 | break; |
Zaitsev | 10:41552d038a69 | 120 | } |
Zaitsev | 10:41552d038a69 | 121 | return gpio_add; |
Zaitsev | 10:41552d038a69 | 122 | } |
Zaitsev | 10:41552d038a69 | 123 | |
Zaitsev | 10:41552d038a69 | 124 | /** |
Zaitsev | 10:41552d038a69 | 125 | * Configure pin (mode, speed, output type and pull-up/pull-down) |
Zaitsev | 10:41552d038a69 | 126 | */ |
Zaitsev | 10:41552d038a69 | 127 | void pin_function(PinName pin, int data) |
Zaitsev | 10:41552d038a69 | 128 | { |
Zaitsev | 10:41552d038a69 | 129 | MBED_ASSERT(pin != (PinName)NC); |
Zaitsev | 10:41552d038a69 | 130 | // Get the pin informations |
Zaitsev | 10:41552d038a69 | 131 | uint32_t mode = STM_PIN_MODE(data); |
Zaitsev | 10:41552d038a69 | 132 | uint32_t pupd = STM_PIN_PUPD(data); |
Zaitsev | 10:41552d038a69 | 133 | uint32_t afnum = STM_PIN_AFNUM(data); |
Zaitsev | 10:41552d038a69 | 134 | |
Zaitsev | 10:41552d038a69 | 135 | uint32_t port_index = STM_PORT(pin); |
Zaitsev | 10:41552d038a69 | 136 | uint32_t pin_index = STM_PIN(pin); |
Zaitsev | 10:41552d038a69 | 137 | |
Zaitsev | 10:41552d038a69 | 138 | // Enable GPIO clock |
Zaitsev | 10:41552d038a69 | 139 | uint32_t gpio_add = Set_GPIO_Clock(port_index); |
Zaitsev | 10:41552d038a69 | 140 | GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; |
Zaitsev | 10:41552d038a69 | 141 | |
Zaitsev | 10:41552d038a69 | 142 | // Configure GPIO |
Zaitsev | 10:41552d038a69 | 143 | GPIO_InitTypeDef GPIO_InitStructure; |
Zaitsev | 10:41552d038a69 | 144 | GPIO_InitStructure.Pin = (uint32_t)(1 << pin_index); |
Zaitsev | 10:41552d038a69 | 145 | GPIO_InitStructure.Mode = gpio_mode[mode]; |
Zaitsev | 10:41552d038a69 | 146 | GPIO_InitStructure.Pull = pupd; |
Zaitsev | 10:41552d038a69 | 147 | GPIO_InitStructure.Speed = GPIO_SPEED_HIGH; |
Zaitsev | 10:41552d038a69 | 148 | GPIO_InitStructure.Alternate = afnum; |
Zaitsev | 10:41552d038a69 | 149 | HAL_GPIO_Init(gpio, &GPIO_InitStructure); |
Zaitsev | 10:41552d038a69 | 150 | |
Zaitsev | 10:41552d038a69 | 151 | // [TODO] Disconnect JTAG-DP + SW-DP signals. |
Zaitsev | 10:41552d038a69 | 152 | // Warning: Need to reconnect under reset |
Zaitsev | 10:41552d038a69 | 153 | //if ((pin == PA_13) || (pin == PA_14)) { |
Zaitsev | 10:41552d038a69 | 154 | // |
Zaitsev | 10:41552d038a69 | 155 | //} |
Zaitsev | 10:41552d038a69 | 156 | //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) { |
Zaitsev | 10:41552d038a69 | 157 | // |
Zaitsev | 10:41552d038a69 | 158 | //} |
Zaitsev | 10:41552d038a69 | 159 | } |
Zaitsev | 10:41552d038a69 | 160 | |
Zaitsev | 10:41552d038a69 | 161 | /** |
Zaitsev | 10:41552d038a69 | 162 | * Configure pin pull-up/pull-down |
Zaitsev | 10:41552d038a69 | 163 | */ |
Zaitsev | 10:41552d038a69 | 164 | void pin_mode(PinName pin, PinMode mode) |
Zaitsev | 10:41552d038a69 | 165 | { |
Zaitsev | 10:41552d038a69 | 166 | MBED_ASSERT(pin != (PinName)NC); |
Zaitsev | 10:41552d038a69 | 167 | uint32_t port_index = STM_PORT(pin); |
Zaitsev | 10:41552d038a69 | 168 | uint32_t pin_index = STM_PIN(pin); |
Zaitsev | 10:41552d038a69 | 169 | |
Zaitsev | 10:41552d038a69 | 170 | // Enable GPIO clock |
Zaitsev | 10:41552d038a69 | 171 | uint32_t gpio_add = Set_GPIO_Clock(port_index); |
Zaitsev | 10:41552d038a69 | 172 | GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; |
Zaitsev | 10:41552d038a69 | 173 | |
Zaitsev | 10:41552d038a69 | 174 | // Configure pull-up/pull-down resistors |
Zaitsev | 10:41552d038a69 | 175 | uint32_t pupd = (uint32_t)mode; |
Zaitsev | 10:41552d038a69 | 176 | if (pupd > 2) { |
Zaitsev | 10:41552d038a69 | 177 | pupd = 0; // Open-drain = No pull-up/No pull-down |
Zaitsev | 10:41552d038a69 | 178 | } |
Zaitsev | 10:41552d038a69 | 179 | gpio->PUPDR &= (uint32_t)(~(GPIO_PUPDR_PUPDR0 << (pin_index * 2))); |
Zaitsev | 10:41552d038a69 | 180 | gpio->PUPDR |= (uint32_t)(pupd << (pin_index * 2)); |
Zaitsev | 10:41552d038a69 | 181 | } |
Zaitsev | 10:41552d038a69 | 182 | |
Zaitsev | 10:41552d038a69 | 183 | /* Internal function for setting the gpiomode/function |
Zaitsev | 10:41552d038a69 | 184 | * without changing Pull mode |
Zaitsev | 10:41552d038a69 | 185 | */ |
Zaitsev | 10:41552d038a69 | 186 | void pin_function_gpiomode(PinName pin, uint32_t gpiomode) { |
Zaitsev | 10:41552d038a69 | 187 | |
Zaitsev | 10:41552d038a69 | 188 | /* Read current pull state from HW to avoid over-write*/ |
Zaitsev | 10:41552d038a69 | 189 | uint32_t port_index = STM_PORT(pin); |
Zaitsev | 10:41552d038a69 | 190 | uint32_t pin_index = STM_PIN(pin); |
Zaitsev | 10:41552d038a69 | 191 | GPIO_TypeDef *gpio = (GPIO_TypeDef *) Set_GPIO_Clock(port_index); |
Zaitsev | 10:41552d038a69 | 192 | uint32_t temp = gpio->PUPDR; |
Zaitsev | 10:41552d038a69 | 193 | uint32_t pull = (temp >> (pin_index * 2U)) & GPIO_PUPDR_PUPDR0; |
Zaitsev | 10:41552d038a69 | 194 | |
Zaitsev | 10:41552d038a69 | 195 | /* Then re-use global function for updating the mode part*/ |
Zaitsev | 10:41552d038a69 | 196 | pin_function(pin, STM_PIN_DATA(gpiomode, pull, 0)); |
Zaitsev | 10:41552d038a69 | 197 | } |