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LibrePilot/flight/OpenPilot/System/inc/pios_board.h
stac f74c6ffdd5 i2c: rewrite i2c layer
The STM32 I2C block has a number of errata associated with it.
These errata are primarily related to timing sensitivities between
the peripheral and the interrupt handler.  In particular, the
correct generation of the stop bit relies on the I2C IRQ running
immediately and not being held off for any reason.

NOTE: The I2C interrupts must be the highest priority IRQs in the
      system to ensure correct operation.

I2C protocol is now implemented as a formal state machine.
See: stm32_i2c_fsm.{dot,jpg} for FSM description.

I2C init is now expressed by const initializers in pios_board.c
for both OP and AHRS boards.

I2C device drivers (ie. bmp085/hmc5843) now pass in const arrays
of an unlimited number of bus transfers to be done atomically.
The I2C adapter driver now handles all bus-level locking across the
list of transactions.  Generation of start/restart/stop conditions
are handled automatically over the list of transactions.

Timeouts have been removed from the API for now.  May be added
back later.

This driver has run error free on both the OP and AHRS boards for
up to 48hrs but it still sometimes fails earlier than that on the OP
board.  There is another possible set of improvements to the driver
that could employ the DMA engine for transfers of >= 2bytes.  This
change would reduce the timing sensitivities between the peripheral
and the driver but unfortunately, both the SPI and I2C interfaces
share the DMA1 engine.  That means only one of these two peripherals
can use the DMA engine and right now, SPI between OP and AHRS is
already using it.

Failures are currently fatal and will lock up the CPU.  This allows
useful information to be obtained in the failure cases.

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1241 ebee16cc-31ac-478f-84a7-5cbb03baadba
2010-08-08 04:15:08 +00:00

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/**
******************************************************************************
* @addtogroup OpenPilotSystem OpenPilot System
* @{
* @addtogroup OpenPilotCore OpenPilot Core
* @{
* @file pios_board.h
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief Defines board hardware for the OpenPilot Version 1.1 hardware.
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef PIOS_BOARD_H
#define PIOS_BOARD_H
//------------------------
// Timers and Channels Used
//------------------------
/*
Timer | Channel 1 | Channel 2 | Channel 3 | Channel 4
------+-----------+-----------+-----------+----------
TIM1 | RC In 3 | RC In 6 | RC In 5 |
TIM2 | --------------- PIOS_DELAY -----------------
TIM3 | RC In 7 | RC In 8 | RC In 1 | RC In 2
TIM4 | Servo 1 | Servo 2 | Servo 3 | Servo 4
TIM5 | RC In 4 | | |
TIM6 | ----------- PIOS_PWM (Supervisor) ----------
TIM7 | | | |
TIM8 | Servo 5 | Servo 6 | Servo 7 | Servo 8
------+-----------+-----------+-----------+----------
*/
//------------------------
// DMA Channels Used
//------------------------
/* Channel 1 - ADC */
/* Channel 2 - SPI1 RX */
/* Channel 3 - SPI1 TX */
/* Channel 4 - SPI2 RX */
/* Channel 5 - SPI2 TX */
/* Channel 6 - */
/* Channel 7 - */
/* Channel 8 - */
/* Channel 9 - */
/* Channel 10 - */
/* Channel 11 - */
/* Channel 12 - */
//------------------------
// PIOS_LED
//------------------------
#define PIOS_LED_LED1_GPIO_PORT GPIOC
#define PIOS_LED_LED1_GPIO_PIN GPIO_Pin_12
#define PIOS_LED_LED1_GPIO_CLK RCC_APB2Periph_GPIOC
#define PIOS_LED_LED2_GPIO_PORT GPIOC
#define PIOS_LED_LED2_GPIO_PIN GPIO_Pin_13
#define PIOS_LED_LED2_GPIO_CLK RCC_APB2Periph_GPIOC
#define PIOS_LED_NUM 2
#define PIOS_LED_PORTS { PIOS_LED_LED1_GPIO_PORT, PIOS_LED_LED2_GPIO_PORT }
#define PIOS_LED_PINS { PIOS_LED_LED1_GPIO_PIN, PIOS_LED_LED2_GPIO_PIN }
#define PIOS_LED_CLKS { PIOS_LED_LED1_GPIO_CLK, PIOS_LED_LED2_GPIO_CLK }
//------------------------
// PIOS_I2C
// See also pios_board.c
//------------------------
#define PIOS_I2C_MAIN_ADAPTER 0
//------------------------
// PIOS_BMP085
//------------------------
#define PIOS_BMP085_EOC_GPIO_PORT GPIOC
#define PIOS_BMP085_EOC_GPIO_PIN GPIO_Pin_15
#define PIOS_BMP085_EOC_PORT_SOURCE GPIO_PortSourceGPIOG
#define PIOS_BMP085_EOC_PIN_SOURCE GPIO_PinSource8
#define PIOS_BMP085_EOC_CLK RCC_APB2Periph_GPIOC
#define PIOS_BMP085_EOC_EXTI_LINE EXTI_Line15
#define PIOS_BMP085_EOC_IRQn EXTI15_10_IRQn
#define PIOS_BMP085_EOC_PRIO PIOS_IRQ_PRIO_HIGH
#define PIOS_BMP085_OVERSAMPLING 2
//-------------------------
// USART
//
// See also pios_board.c
//-------------------------
#define PIOS_USART_RX_BUFFER_SIZE 1024
#define PIOS_USART_TX_BUFFER_SIZE 256
#define PIOS_COM_TELEM_RF 0
#define PIOS_COM_GPS 1
#define PIOS_COM_TELEM_USB 2
#ifdef PIOS_ENABLE_AUX_UART
#define PIOS_COM_AUX 3
#define PIOS_COM_DEBUG PIOS_COM_AUX
#endif
#ifdef PIOS_INCLUDE_SPEKTRUM
#define PIOS_COM_SPEKTRUM 3
#endif
//-------------------------
// SPI
//
// See also pios_board.c
//-------------------------
#define PIOS_SDCARD_SPI 0
#define PIOS_OPAHRS_SPI 1
//-------------------------
// Delay Timer
//-------------------------
#define PIOS_DELAY_TIMER TIM2
#define PIOS_DELAY_TIMER_RCC_FUNC RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE)
//-------------------------
// System Settings
//-------------------------
#define PIOS_MASTER_CLOCK 72000000
#define PIOS_PERIPHERAL_CLOCK (PIOS_MASTER_CLOCK / 2)
#if defined(USE_BOOTLOADER)
#define PIOS_NVIC_VECTTAB_FLASH ((uint32_t)0x08006000)
#else
#define PIOS_NVIC_VECTTAB_FLASH ((uint32_t)0x08000000)
#endif
//-------------------------
// Interrupt Priorities
//-------------------------
#define PIOS_IRQ_PRIO_LOW 12 // lower than RTOS
#define PIOS_IRQ_PRIO_MID 8 // higher than RTOS
#define PIOS_IRQ_PRIO_HIGH 5 // for SPI, ADC, I2C etc...
#define PIOS_IRQ_PRIO_HIGHEST 4 // for USART etc...
//-------------------------
// Receiver PWM inputs
//-------------------------
#define PIOS_PWM_CH1_GPIO_PORT GPIOA
#define PIOS_PWM_CH1_PIN GPIO_Pin_9
#define PIOS_PWM_CH1_TIM_PORT TIM1
#define PIOS_PWM_CH1_CH TIM_Channel_2
#define PIOS_PWM_CH1_CCR TIM_IT_CC2
#define PIOS_PWM_CH2_GPIO_PORT GPIOA
#define PIOS_PWM_CH2_PIN GPIO_Pin_10
#define PIOS_PWM_CH2_TIM_PORT TIM1
#define PIOS_PWM_CH2_CH TIM_Channel_3
#define PIOS_PWM_CH2_CCR TIM_IT_CC3
#define PIOS_PWM_CH3_GPIO_PORT GPIOA
#define PIOS_PWM_CH3_PIN GPIO_Pin_0
#define PIOS_PWM_CH3_TIM_PORT TIM5
#define PIOS_PWM_CH3_CH TIM_Channel_1
#define PIOS_PWM_CH3_CCR TIM_IT_CC1
#define PIOS_PWM_CH4_GPIO_PORT GPIOA
#define PIOS_PWM_CH4_PIN GPIO_Pin_8
#define PIOS_PWM_CH4_TIM_PORT TIM1
#define PIOS_PWM_CH4_CH TIM_Channel_1
#define PIOS_PWM_CH4_CCR TIM_IT_CC1
#define PIOS_PWM_CH5_GPIO_PORT GPIOB
#define PIOS_PWM_CH5_PIN GPIO_Pin_1
#define PIOS_PWM_CH5_TIM_PORT TIM3
#define PIOS_PWM_CH5_CH TIM_Channel_4
#define PIOS_PWM_CH5_CCR TIM_IT_CC4
#define PIOS_PWM_CH6_GPIO_PORT GPIOB
#define PIOS_PWM_CH6_PIN GPIO_Pin_0
#define PIOS_PWM_CH6_TIM_PORT TIM3
#define PIOS_PWM_CH6_CH TIM_Channel_3
#define PIOS_PWM_CH6_CCR TIM_IT_CC3
#define PIOS_PWM_CH7_GPIO_PORT GPIOB
#define PIOS_PWM_CH7_PIN GPIO_Pin_4
#define PIOS_PWM_CH7_TIM_PORT TIM3
#define PIOS_PWM_CH7_CH TIM_Channel_1
#define PIOS_PWM_CH7_CCR TIM_IT_CC1
#define PIOS_PWM_CH8_GPIO_PORT GPIOB
#define PIOS_PWM_CH8_PIN GPIO_Pin_5
#define PIOS_PWM_CH8_TIM_PORT TIM3
#define PIOS_PWM_CH8_CH TIM_Channel_2
#define PIOS_PWM_CH8_CCR TIM_IT_CC2
#define PIOS_PWM_GPIO_PORTS { PIOS_PWM_CH1_GPIO_PORT, PIOS_PWM_CH2_GPIO_PORT, PIOS_PWM_CH3_GPIO_PORT, PIOS_PWM_CH4_GPIO_PORT, PIOS_PWM_CH5_GPIO_PORT, PIOS_PWM_CH6_GPIO_PORT, PIOS_PWM_CH7_GPIO_PORT, PIOS_PWM_CH8_GPIO_PORT }
#define PIOS_PWM_GPIO_PINS { PIOS_PWM_CH1_PIN, PIOS_PWM_CH2_PIN, PIOS_PWM_CH3_PIN, PIOS_PWM_CH4_PIN, PIOS_PWM_CH5_PIN, PIOS_PWM_CH6_PIN, PIOS_PWM_CH7_PIN, PIOS_PWM_CH8_PIN }
#define PIOS_PWM_TIM_PORTS { PIOS_PWM_CH1_TIM_PORT, PIOS_PWM_CH2_TIM_PORT, PIOS_PWM_CH3_TIM_PORT, PIOS_PWM_CH4_TIM_PORT, PIOS_PWM_CH5_TIM_PORT, PIOS_PWM_CH6_TIM_PORT, PIOS_PWM_CH7_TIM_PORT, PIOS_PWM_CH8_TIM_PORT }
#define PIOS_PWM_TIM_CHANNELS { PIOS_PWM_CH1_CH, PIOS_PWM_CH2_CH, PIOS_PWM_CH3_CH, PIOS_PWM_CH4_CH, PIOS_PWM_CH5_CH, PIOS_PWM_CH6_CH, PIOS_PWM_CH7_CH, PIOS_PWM_CH8_CH }
#define PIOS_PWM_TIM_CCRS { PIOS_PWM_CH1_CCR, PIOS_PWM_CH2_CCR, PIOS_PWM_CH3_CCR, PIOS_PWM_CH4_CCR, PIOS_PWM_CH5_CCR, PIOS_PWM_CH6_CCR, PIOS_PWM_CH7_CCR, PIOS_PWM_CH8_CCR }
#define PIOS_PWM_TIMS { TIM1, TIM3, TIM5 }
#define PIOS_PWM_TIM_IRQS { TIM1_CC_IRQn, TIM3_IRQn, TIM5_IRQn }
#define PIOS_PWM_NUM_INPUTS 8
#define PIOS_PWM_NUM_TIMS 3
#define PIOS_PWM_SUPV_ENABLED 1
#define PIOS_PWM_SUPV_TIMER TIM6
#define PIOS_PWM_SUPV_TIMER_RCC_FUNC RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE)
#define PIOS_PWM_SUPV_HZ 25
#define PIOS_PWM_SUPV_IRQ_CHANNEL TIM6_IRQn
#define PIOS_PWM_SUPV_IRQ_FUNC void TIM6_IRQHandler(void)
//-------------------------
// Receiver PPM input
//-------------------------
#define PIOS_PPM_GPIO_PORT PIOS_PWM_CH1_GPIO_PORT
#define PIOS_PPM_GPIO_PIN PIOS_PWM_CH1_PIN
#define PIOS_PPM_TIM_PORT PIOS_PWM_CH1_TIM_PORT
#define PIOS_PPM_TIM_CHANNEL PIOS_PWM_CH1_CH
#define PIOS_PPM_TIM_CCR PIOS_PWM_CH1_CCR
#define PIOS_PPM_TIM TIM1
#define PIOS_PPM_TIM_IRQ TIM1_CC_IRQn
#define PIOS_PPM_NUM_INPUTS 8 //Could be more if needed
#define PIOS_PPM_SUPV_ENABLED 1
#define PIOS_PPM_SUPV_TIMER TIM6
#define PIOS_PPM_SUPV_TIMER_RCC_FUNC RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6, ENABLE)
#define PIOS_PPM_SUPV_HZ 25
#define PIOS_PPM_SUPV_IRQ_CHANNEL TIM6_IRQn
#define PIOS_PPM_SUPV_IRQ_FUNC void TIM6_IRQHandler(void)
//-------------------------
// Servo outputs
//-------------------------
#define PIOS_SERVO_GPIO_PORT_1TO4 GPIOB
#define PIOS_SERVO_GPIO_PIN_1 GPIO_Pin_6
#define PIOS_SERVO_GPIO_PIN_2 GPIO_Pin_7
#define PIOS_SERVO_GPIO_PIN_3 GPIO_Pin_8
#define PIOS_SERVO_GPIO_PIN_4 GPIO_Pin_9
#define PIOS_SERVO_GPIO_PORT_5TO8 GPIOC
#define PIOS_SERVO_GPIO_PIN_5 GPIO_Pin_6
#define PIOS_SERVO_GPIO_PIN_6 GPIO_Pin_7
#define PIOS_SERVO_GPIO_PIN_7 GPIO_Pin_8
#define PIOS_SERVO_GPIO_PIN_8 GPIO_Pin_9
#define PIOS_SERVO_NUM_OUTPUTS 8
#define PIOS_SERVO_NUM_TIMERS PIOS_SERVO_NUM_OUTPUTS
#define PIOS_SERVO_UPDATE_HZ 50
#define PIOS_SERVOS_INITIAL_POSITION 1500
//-------------------------
// ADC
// PIOS_ADC_PinGet(0) = Temperature Sensor (On-board)
// PIOS_ADC_PinGet(1) = Power Sensor (Current)
// PIOS_ADC_PinGet(2) = Power Sensor (Voltage)
// PIOS_ADC_PinGet(3) = On-board 5v Rail Sensor
// PIOS_ADC_PinGet(4) = Auxiliary Input 1
// PIOS_ADC_PinGet(5) = Auxiliary Input 2
// PIOS_ADC_PinGet(6) = Auxiliary Input 3
//-------------------------
//#define PIOS_ADC_OVERSAMPLING_RATE 1
#define PIOS_ADC_USE_TEMP_SENSOR 1
#define PIOS_ADC_TEMP_SENSOR_ADC ADC1
#define PIOS_ADC_TEMP_SENSOR_ADC_CHANNEL 1
#define PIOS_ADC_PIN1_GPIO_PORT GPIOA // PA1 (Power Sense - Voltage)
#define PIOS_ADC_PIN1_GPIO_PIN GPIO_Pin_1 // ADC123_IN1
#define PIOS_ADC_PIN1_GPIO_CHANNEL ADC_Channel_1
#define PIOS_ADC_PIN1_ADC ADC1
#define PIOS_ADC_PIN1_ADC_NUMBER 2
#define PIOS_ADC_PIN2_GPIO_PORT GPIOC // PC3 (Power Sense - Current)
#define PIOS_ADC_PIN2_GPIO_PIN GPIO_Pin_3 // ADC123_IN13
#define PIOS_ADC_PIN2_GPIO_CHANNEL ADC_Channel_13
#define PIOS_ADC_PIN2_ADC ADC2
#define PIOS_ADC_PIN2_ADC_NUMBER 1
#define PIOS_ADC_PIN3_GPIO_PORT GPIOC // PC5 (Onboard 5v Sensor) PC5
#define PIOS_ADC_PIN3_GPIO_PIN GPIO_Pin_5 // ADC12_IN15
#define PIOS_ADC_PIN3_GPIO_CHANNEL ADC_Channel_15
#define PIOS_ADC_PIN3_ADC ADC2
#define PIOS_ADC_PIN3_ADC_NUMBER 2
#define PIOS_ADC_PIN4_GPIO_PORT GPIOC // PC0 (AUX 1)
#define PIOS_ADC_PIN4_GPIO_PIN GPIO_Pin_0 // ADC123_IN10
#define PIOS_ADC_PIN4_GPIO_CHANNEL ADC_Channel_10
#define PIOS_ADC_PIN4_ADC ADC1
#define PIOS_ADC_PIN4_ADC_NUMBER 3
#define PIOS_ADC_PIN5_GPIO_PORT GPIOC // PC1 (AUX 2)
#define PIOS_ADC_PIN5_GPIO_PIN GPIO_Pin_1 // ADC123_IN11
#define PIOS_ADC_PIN5_GPIO_CHANNEL ADC_Channel_11
#define PIOS_ADC_PIN5_ADC ADC2
#define PIOS_ADC_PIN5_ADC_NUMBER 3
#define PIOS_ADC_PIN6_GPIO_PORT GPIOC // PC2 (AUX 3)
#define PIOS_ADC_PIN6_GPIO_PIN GPIO_Pin_2 // ADC123_IN12
#define PIOS_ADC_PIN6_GPIO_CHANNEL ADC_Channel_12
#define PIOS_ADC_PIN6_ADC ADC1
#define PIOS_ADC_PIN6_ADC_NUMBER 4
#define PIOS_ADC_NUM_PINS 6
#define PIOS_ADC_PORTS { PIOS_ADC_PIN1_GPIO_PORT, PIOS_ADC_PIN2_GPIO_PORT, PIOS_ADC_PIN3_GPIO_PORT, PIOS_ADC_PIN4_GPIO_PORT, PIOS_ADC_PIN5_GPIO_PORT, PIOS_ADC_PIN6_GPIO_PORT }
#define PIOS_ADC_PINS { PIOS_ADC_PIN1_GPIO_PIN, PIOS_ADC_PIN2_GPIO_PIN, PIOS_ADC_PIN3_GPIO_PIN, PIOS_ADC_PIN4_GPIO_PIN, PIOS_ADC_PIN5_GPIO_PIN, PIOS_ADC_PIN6_GPIO_PIN }
#define PIOS_ADC_CHANNELS { PIOS_ADC_PIN1_GPIO_CHANNEL, PIOS_ADC_PIN2_GPIO_CHANNEL, PIOS_ADC_PIN3_GPIO_CHANNEL, PIOS_ADC_PIN4_GPIO_CHANNEL, PIOS_ADC_PIN5_GPIO_CHANNEL, PIOS_ADC_PIN6_GPIO_CHANNEL }
#define PIOS_ADC_MAPPING { PIOS_ADC_PIN1_ADC, PIOS_ADC_PIN2_ADC, PIOS_ADC_PIN3_ADC, PIOS_ADC_PIN4_ADC, PIOS_ADC_PIN5_ADC, PIOS_ADC_PIN6_ADC }
#define PIOS_ADC_CHANNEL_MAPPING { PIOS_ADC_PIN1_ADC_NUMBER, PIOS_ADC_PIN2_ADC_NUMBER, PIOS_ADC_PIN3_ADC_NUMBER, PIOS_ADC_PIN4_ADC_NUMBER, PIOS_ADC_PIN5_ADC_NUMBER, PIOS_ADC_PIN6_ADC_NUMBER }
#define PIOS_ADC_NUM_CHANNELS (PIOS_ADC_NUM_PINS + PIOS_ADC_USE_TEMP_SENSOR)
#define PIOS_ADC_NUM_ADC_CHANNELS 2
#define PIOS_ADC_USE_ADC2 1
#define PIOS_ADC_CLOCK_FUNCTION RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_ADC2, ENABLE)
#define PIOS_ADC_ADCCLK RCC_PCLK2_Div8
/* RCC_PCLK2_Div2: ADC clock = PCLK2/2 */
/* RCC_PCLK2_Div4: ADC clock = PCLK2/4 */
/* RCC_PCLK2_Div6: ADC clock = PCLK2/6 */
/* RCC_PCLK2_Div8: ADC clock = PCLK2/8 */
#define PIOS_ADC_SAMPLE_TIME ADC_SampleTime_239Cycles5
/* Sample time: */
/* With an ADCCLK = 14 MHz and a sampling time of 293.5 cycles: */
/* Tconv = 239.5 + 12.5 = 252 cycles = 18<31>s */
/* (1 / (ADCCLK / CYCLES)) = Sample Time (<28>S) */
#define PIOS_ADC_IRQ_PRIO PIOS_IRQ_PRIO_HIGH
//-------------------------
// GPIO
//-------------------------
#define PIOS_GPIO_1_PORT GPIOC
#define PIOS_GPIO_1_PIN GPIO_Pin_0
#define PIOS_GPIO_1_GPIO_CLK RCC_APB2Periph_GPIOC
#define PIOS_GPIO_2_PORT GPIOC
#define PIOS_GPIO_2_PIN GPIO_Pin_1
#define PIOS_GPIO_2_GPIO_CLK RCC_APB2Periph_GPIOC
#define PIOS_GPIO_3_PORT GPIOC
#define PIOS_GPIO_3_PIN GPIO_Pin_2
#define PIOS_GPIO_3_GPIO_CLK RCC_APB2Periph_GPIOC
#define PIOS_GPIO_4_PORT GPIOD
#define PIOS_GPIO_4_PIN GPIO_Pin_2
#define PIOS_GPIO_4_GPIO_CLK RCC_APB2Periph_GPIOD
#define PIOS_GPIO_PORTS { PIOS_GPIO_1_PORT, PIOS_GPIO_2_PORT, PIOS_GPIO_3_PORT, PIOS_GPIO_4_PORT }
#define PIOS_GPIO_PINS { PIOS_GPIO_1_PIN, PIOS_GPIO_2_PIN, PIOS_GPIO_3_PIN, PIOS_GPIO_4_PIN }
#define PIOS_GPIO_CLKS { PIOS_GPIO_1_GPIO_CLK, PIOS_GPIO_2_GPIO_CLK, PIOS_GPIO_3_GPIO_CLK, PIOS_GPIO_4_GPIO_CLK }
#define PIOS_GPIO_NUM 4
//-------------------------
// USB
//-------------------------
#define PIOS_USB_ENABLED 1
#define PIOS_USB_DETECT_GPIO_PORT GPIOC
#define PIOS_USB_DETECT_GPIO_PIN GPIO_Pin_4
#define PIOS_USB_DETECT_EXTI_LINE EXTI_Line4
#define PIOS_IRQ_USB_PRIORITY PIOS_IRQ_PRIO_MID
/**
* glue macros for file IO
* STM32 uses DOSFS for file IO
*/
#define PIOS_FOPEN_READ(filename,file) DFS_OpenFile(&PIOS_SDCARD_VolInfo, (uint8_t *)filename, DFS_READ, PIOS_SDCARD_Sector, &file) != DFS_OK
#define PIOS_FOPEN_WRITE(filename,file) DFS_OpenFile(&PIOS_SDCARD_VolInfo, (uint8_t *)filename, DFS_WRITE, PIOS_SDCARD_Sector, &file) != DFS_OK
#define PIOS_FREAD(file,bufferadr,length,resultadr) DFS_ReadFile(file, PIOS_SDCARD_Sector, (uint8_t*)bufferadr, resultadr, length) != DFS_OK
#define PIOS_FWRITE(file,bufferadr,length,resultadr) DFS_WriteFile(file, PIOS_SDCARD_Sector, (uint8_t*)bufferadr, resultadr, length)
#define PIOS_FCLOSE(file) DFS_Close(&file)
#define PIOS_FUNLINK(filename) DFS_UnlinkFile(&PIOS_SDCARD_VolInfo, (uint8_t *)filename, PIOS_SDCARD_Sector)
#endif /* PIOS_BOARD_H */
/**
* @}
* @}
*/