LibrePilot/flight/AHRS/pios_board.c

/**
 ******************************************************************************
 *
 * @file       pios_board.c
 * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
 * @brief      Defines board specific static initializers for hardware for the AHRS board.
 * @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
 */

#include <pios.h>

#if defined(PIOS_INCLUDE_SPI)

#include <pios_spi_priv.h>

/* OP Interface
 * 
 * NOTE: Leave this declared as const data so that it ends up in the 
 * .rodata section (ie. Flash) rather than in the .bss section (RAM).
 */
void PIOS_SPI_op_irq_handler(void);
void DMA1_Channel5_IRQHandler()
    __attribute__ ((alias("PIOS_SPI_op_irq_handler")));
void DMA1_Channel4_IRQHandler()
    __attribute__ ((alias("PIOS_SPI_op_irq_handler")));
static const struct pios_spi_cfg pios_spi_op_cfg = {
	.regs = SPI2,
	.init = {
		 .SPI_Mode = SPI_Mode_Slave,
		 .SPI_Direction = SPI_Direction_2Lines_FullDuplex,
		 .SPI_DataSize = SPI_DataSize_8b,
		 .SPI_NSS = SPI_NSS_Hard,
		 .SPI_FirstBit = SPI_FirstBit_MSB,
		 .SPI_CRCPolynomial = 7,
		 .SPI_CPOL = SPI_CPOL_High,
		 .SPI_CPHA = SPI_CPHA_2Edge,
		 },
	.use_crc = TRUE,
	.dma = {
		.ahb_clk = RCC_AHBPeriph_DMA1,

		.irq = {
			.handler = PIOS_SPI_op_irq_handler,
			.flags =
			(DMA1_FLAG_TC4 | DMA1_FLAG_TE4 | DMA1_FLAG_HT4 |
			 DMA1_FLAG_GL4),
			.init = {
				 .NVIC_IRQChannel = DMA1_Channel4_IRQn,
				 .NVIC_IRQChannelPreemptionPriority =
				 PIOS_IRQ_PRIO_HIGH,
				 .NVIC_IRQChannelSubPriority = 0,
				 .NVIC_IRQChannelCmd = ENABLE,
				 },
			},

		.rx = {
		       .channel = DMA1_Channel4,
		       .init = {
				.DMA_PeripheralBaseAddr =
				(uint32_t) & (SPI2->DR),
				.DMA_DIR = DMA_DIR_PeripheralSRC,
				.DMA_PeripheralInc =
				DMA_PeripheralInc_Disable,
				.DMA_MemoryInc = DMA_MemoryInc_Enable,
				.DMA_PeripheralDataSize =
				DMA_PeripheralDataSize_Byte,
				.DMA_MemoryDataSize =
				DMA_MemoryDataSize_Byte,
				.DMA_Mode = DMA_Mode_Normal,
				.DMA_Priority = DMA_Priority_Medium,
				.DMA_M2M = DMA_M2M_Disable,
				},
		       },
		.tx = {
		       .channel = DMA1_Channel5,
		       .init = {
				.DMA_PeripheralBaseAddr =
				(uint32_t) & (SPI2->DR),
				.DMA_DIR = DMA_DIR_PeripheralDST,
				.DMA_PeripheralInc =
				DMA_PeripheralInc_Disable,
				.DMA_MemoryInc = DMA_MemoryInc_Enable,
				.DMA_PeripheralDataSize =
				DMA_PeripheralDataSize_Byte,
				.DMA_MemoryDataSize =
				DMA_MemoryDataSize_Byte,
				.DMA_Mode = DMA_Mode_Normal,
				.DMA_Priority = DMA_Priority_Medium,
				.DMA_M2M = DMA_M2M_Disable,
				},
		       },
		},
	.ssel = {
		 .gpio = GPIOB,
		 .init = {
			  .GPIO_Pin = GPIO_Pin_12,
			  .GPIO_Speed = GPIO_Speed_50MHz,
			  .GPIO_Mode = GPIO_Mode_IN_FLOATING,
			  },
		 },
	.sclk = {
		 .gpio = GPIOB,
		 .init = {
			  .GPIO_Pin = GPIO_Pin_13,
			  .GPIO_Speed = GPIO_Speed_50MHz,
			  .GPIO_Mode = GPIO_Mode_IN_FLOATING,
			  },
		 },
	.miso = {
		 .gpio = GPIOB,
		 .init = {
			  .GPIO_Pin = GPIO_Pin_14,
			  .GPIO_Speed = GPIO_Speed_50MHz,
			  .GPIO_Mode = GPIO_Mode_AF_PP,
			  },
		 },
	.mosi = {
		 .gpio = GPIOB,
		 .init = {
			  .GPIO_Pin = GPIO_Pin_15,
			  .GPIO_Speed = GPIO_Speed_50MHz,
			  .GPIO_Mode = GPIO_Mode_IN_FLOATING,
			  },
		 },
};

/*
 * Board specific number of devices.
 */
struct pios_spi_dev pios_spi_devs[] = {
	{
	 .cfg = &pios_spi_op_cfg,
	 },
};

uint8_t pios_spi_num_devices = NELEMENTS(pios_spi_devs);

void PIOS_SPI_op_irq_handler(void)
{
	/* Call into the generic code to handle the IRQ for this specific device */
	PIOS_SPI_IRQ_Handler(PIOS_SPI_OP);
}

#endif /* PIOS_INCLUDE_SPI */

#if defined(PIOS_INCLUDE_USART)
#include <pios_usart_priv.h>

/*
 * AUX USART
 */
void PIOS_USART_aux_irq_handler(void);
void USART3_IRQHandler()
    __attribute__ ((alias("PIOS_USART_aux_irq_handler")));
const struct pios_usart_cfg pios_usart_aux_cfg = {
	.regs = USART3,
	.init = {
#if defined (PIOS_USART_BAUDRATE)
		 .USART_BaudRate = PIOS_USART_BAUDRATE,
#else
		 .USART_BaudRate = 57600,
#endif
		 .USART_WordLength = USART_WordLength_8b,
		 .USART_Parity = USART_Parity_No,
		 .USART_StopBits = USART_StopBits_1,
		 .USART_HardwareFlowControl =
		 USART_HardwareFlowControl_None,
		 .USART_Mode = USART_Mode_Rx | USART_Mode_Tx,
		 },
	.irq = {
		.handler = PIOS_USART_aux_irq_handler,
		.init = {
			 .NVIC_IRQChannel = USART3_IRQn,
			 .NVIC_IRQChannelPreemptionPriority =
			 PIOS_IRQ_PRIO_HIGH,
			 .NVIC_IRQChannelSubPriority = 0,
			 .NVIC_IRQChannelCmd = ENABLE,
			 },
		},
	.rx = {
	       .gpio = GPIOB,
	       .init = {
			.GPIO_Pin = GPIO_Pin_11,
			.GPIO_Speed = GPIO_Speed_2MHz,
			.GPIO_Mode = GPIO_Mode_IPU,
			},
	       },
	.tx = {
	       .gpio = GPIOB,
	       .init = {
			.GPIO_Pin = GPIO_Pin_10,
			.GPIO_Speed = GPIO_Speed_2MHz,
			.GPIO_Mode = GPIO_Mode_AF_PP,
			},
	       },
};

/*
 * Board specific number of devices.
 */
struct pios_usart_dev pios_usart_devs[] = {
#define PIOS_USART_AUX    0
	{
	 .cfg = &pios_usart_aux_cfg,
	 },
};

uint8_t pios_usart_num_devices = NELEMENTS(pios_usart_devs);

void PIOS_USART_aux_irq_handler(void)
{
	PIOS_USART_IRQ_Handler(PIOS_USART_AUX);
}

#endif /* PIOS_INCLUDE_USART */

#if defined(PIOS_INCLUDE_COM)
#include <pios_com_priv.h>

/*
 * COM devices
 */

/*
 * Board specific number of devices.
 */
extern const struct pios_com_driver pios_usart_com_driver;

struct pios_com_dev pios_com_devs[] = {
#if defined(PIOS_INCLUDE_USART)
	{
	 .id = PIOS_USART_AUX,
	 .driver = &pios_usart_com_driver,
	 },
#endif
};

const uint8_t pios_com_num_devices = NELEMENTS(pios_com_devs);

#endif /* PIOS_INCLUDE_COM */

#if defined(PIOS_INCLUDE_I2C)
#include <pios_i2c_priv.h>

/*
 * I2C Adapters
 */

void PIOS_I2C_main_adapter_ev_irq_handler(void);
void PIOS_I2C_main_adapter_er_irq_handler(void);
void I2C1_EV_IRQHandler()
    __attribute__ ((alias("PIOS_I2C_main_adapter_ev_irq_handler")));
void I2C1_ER_IRQHandler()
    __attribute__ ((alias("PIOS_I2C_main_adapter_er_irq_handler")));

const struct pios_i2c_adapter_cfg pios_i2c_main_adapter_cfg = {
	.regs = I2C1,
	.init = {
		 .I2C_Mode = I2C_Mode_I2C,
		 .I2C_OwnAddress1 = 0,
		 .I2C_Ack = I2C_Ack_Enable,
		 .I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit,
		 .I2C_DutyCycle = I2C_DutyCycle_2,
		 .I2C_ClockSpeed = 200000,	/* bits/s */
		 },
	.transfer_timeout_ms = 50,
	.scl = {
		.gpio = GPIOB,
		.init = {
			 .GPIO_Pin = GPIO_Pin_6,
			 .GPIO_Speed = GPIO_Speed_10MHz,
			 .GPIO_Mode = GPIO_Mode_AF_OD,
			 },
		},
	.sda = {
		.gpio = GPIOB,
		.init = {
			 .GPIO_Pin = GPIO_Pin_7,
			 .GPIO_Speed = GPIO_Speed_10MHz,
			 .GPIO_Mode = GPIO_Mode_AF_OD,
			 },
		},
	.event = {
		  .handler = PIOS_I2C_main_adapter_ev_irq_handler,
		  .flags = 0,	/* FIXME: check this */
		  .init = {
			   .NVIC_IRQChannel = I2C1_EV_IRQn,
			   //.NVIC_IRQChannelPreemptionPriority = PIOS_IRQ_PRIO_HIGHEST,
			   .NVIC_IRQChannelPreemptionPriority = 2,
			   .NVIC_IRQChannelSubPriority = 0,
			   .NVIC_IRQChannelCmd = ENABLE,
			   },
		  },
	.error = {
		  .handler = PIOS_I2C_main_adapter_er_irq_handler,
		  .flags = 0,	/* FIXME: check this */
		  .init = {
			   .NVIC_IRQChannel = I2C1_ER_IRQn,
			   //.NVIC_IRQChannelPreemptionPriority = PIOS_IRQ_PRIO_HIGHEST,
			   .NVIC_IRQChannelPreemptionPriority = 2,
			   .NVIC_IRQChannelSubPriority = 0,
			   .NVIC_IRQChannelCmd = ENABLE,
			   },
		  },
};

/*
 * Board specific number of devices.
 */
struct pios_i2c_adapter pios_i2c_adapters[] = {
	{
	 .cfg = &pios_i2c_main_adapter_cfg,
	 },
};

uint8_t pios_i2c_num_adapters = NELEMENTS(pios_i2c_adapters);

void PIOS_I2C_main_adapter_ev_irq_handler(void)
{
	/* Call into the generic code to handle the IRQ for this specific device */
	PIOS_I2C_EV_IRQ_Handler(PIOS_I2C_MAIN_ADAPTER);
}

void PIOS_I2C_main_adapter_er_irq_handler(void)
{
	/* Call into the generic code to handle the IRQ for this specific device */
	PIOS_I2C_ER_IRQ_Handler(PIOS_I2C_MAIN_ADAPTER);
}

#endif /* PIOS_INCLUDE_I2C */