flight/pios/stm32f4xx/inc/pios_i2c_config.h

   1 /*
   2  * pios_i2c_config.h
   3  *
   4  *  Created on: May 8, 2011
   5  *      Author: Michael Smith
   6  */
   7
   8 #ifndef PIOS_I2C_CONFIG_H_
   9 #define PIOS_I2C_CONFIG_H_
  10
  11 /**
  12  * Generic I2C configuration for the STM32F4xx
  13  */
  14 #define I2C_CONFIG(_i2c, _scl_gpio, _scl_pin, _sda_gpio, _sda_pin)              \
  15     {                                                                       \
  16         .regs  = _i2c,                                                       \
  17         .remap = GPIO_AF_##_i2c,                                          \
  18         .init  = {                                                           \
  19             .I2C_ClockSpeed  = 400000,  /* bits/s */                \
  20             .I2C_Mode                = I2C_Mode_I2C,                        \
  21             .I2C_DutyCycle   = I2C_DutyCycle_2,                     \
  22             .I2C_OwnAddress1 = 0,                                   \
  23             .I2C_Ack                 = I2C_Ack_Enable,                      \
  24             .I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit,        \
  25         },                                                                  \
  26         .transfer_timeout_ms = 50,                                          \
  27         .scl = {                                                            \
  28             .gpio = _scl_gpio,                                              \
  29             .init = {                                                       \
  30                 .GPIO_Pin   = _scl_pin,                                     \
  31                 .GPIO_Mode  = GPIO_Mode_AF,                                 \
  32                 .GPIO_Speed = GPIO_Speed_50MHz,                             \
  33                 .GPIO_OType = GPIO_OType_OD,                                \
  34                 .GPIO_PuPd  = GPIO_PuPd_NOPULL,                             \
  35             },                                                              \
  36         },                                                                  \
  37         .sda = {                                                            \
  38             .gpio = _sda_gpio,                                              \
  39             .init = {                                                       \
  40                 .GPIO_Pin   = _sda_pin,                                     \
  41                 .GPIO_Mode  = GPIO_Mode_AF,                                 \
  42                 .GPIO_Speed = GPIO_Speed_50MHz,                             \
  43                 .GPIO_OType = GPIO_OType_OD,                                \
  44                 .GPIO_PuPd  = GPIO_PuPd_NOPULL,                             \
  45             },                                                              \
  46         },                                                                  \
  47         .event = {                                                          \
  48             .flags = 0,       /* FIXME: check this */                     \
  49             .init  = {                                                       \
  50                 .NVIC_IRQChannel    = _i2c##_EV_IRQn,      \
  51                 .NVIC_IRQChannelPreemptionPriority = PIOS_IRQ_PRIO_HIGHEST, \
  52                 .NVIC_IRQChannelSubPriority        = 0,                     \
  53                 .NVIC_IRQChannelCmd = ENABLE,                \
  54             },                                                              \
  55         },                                                                  \
  56         .error = {                                                          \
  57             .flags = 0,       /* FIXME: check this */                     \
  58             .init  = {                                                       \
  59                 .NVIC_IRQChannel    = _i2c##_ER_IRQn,      \
  60                 .NVIC_IRQChannelPreemptionPriority = PIOS_IRQ_PRIO_HIGHEST, \
  61                 .NVIC_IRQChannelSubPriority        = 0,                     \
  62                 .NVIC_IRQChannelCmd = ENABLE,                \
  63             },                                                              \
  64         },                                                                  \
  65     }
  66
  67 #endif /* PIOS_I2C_CONFIG_H_ */