diff options
Diffstat (limited to 'src/drivers/boards/px4fmu/px4fmu_init.c')
| -rw-r--r-- | src/drivers/boards/px4fmu/px4fmu_init.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/src/drivers/boards/px4fmu/px4fmu_init.c b/src/drivers/boards/px4fmu/px4fmu_init.c new file mode 100644 index 000000000..69edc23ab --- /dev/null +++ b/src/drivers/boards/px4fmu/px4fmu_init.c @@ -0,0 +1,268 @@ +/**************************************************************************** + * + * Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name PX4 nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/** + * @file px4fmu_init.c + * + * PX4FMU-specific early startup code. This file implements the + * nsh_archinitialize() function that is called early by nsh during startup. + * + * Code here is run before the rcS script is invoked; it should start required + * subsystems and perform board-specific initialisation. + */ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <stdbool.h> +#include <stdio.h> +#include <debug.h> +#include <errno.h> + +#include <nuttx/arch.h> +#include <nuttx/spi.h> +#include <nuttx/i2c.h> +#include <nuttx/mmcsd.h> +#include <nuttx/analog/adc.h> + +#include "stm32_internal.h" +#include "px4fmu_internal.h" +#include "stm32_uart.h" + +#include <arch/board/board.h> + +#include <drivers/drv_hrt.h> +#include <drivers/drv_led.h> + +#include <systemlib/cpuload.h> + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/* Configuration ************************************************************/ + +/* Debug ********************************************************************/ + +#ifdef CONFIG_CPP_HAVE_VARARGS +# ifdef CONFIG_DEBUG +# define message(...) lowsyslog(__VA_ARGS__) +# else +# define message(...) printf(__VA_ARGS__) +# endif +#else +# ifdef CONFIG_DEBUG +# define message lowsyslog +# else +# define message printf +# endif +#endif + +/* + * Ideally we'd be able to get these from up_internal.h, + * but since we want to be able to disable the NuttX use + * of leds for system indication at will and there is no + * separate switch, we need to build independent of the + * CONFIG_ARCH_LEDS configuration switch. + */ +__BEGIN_DECLS +extern void led_init(); +extern void led_on(int led); +extern void led_off(int led); +__END_DECLS + +/**************************************************************************** + * Protected Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/************************************************************************************ + * Name: stm32_boardinitialize + * + * Description: + * All STM32 architectures must provide the following entry point. This entry point + * is called early in the intitialization -- after all memory has been configured + * and mapped but before any devices have been initialized. + * + ************************************************************************************/ + +__EXPORT void stm32_boardinitialize(void) +{ + /* configure SPI interfaces */ + stm32_spiinitialize(); + + /* configure LEDs (empty call to NuttX' ledinit) */ + up_ledinit(); +} + +/**************************************************************************** + * Name: nsh_archinitialize + * + * Description: + * Perform architecture specific initialization + * + ****************************************************************************/ + +static struct spi_dev_s *spi1; +static struct spi_dev_s *spi2; +static struct spi_dev_s *spi3; + +#include <math.h> + +#ifdef __cplusplus +__EXPORT int matherr(struct __exception *e) +{ + return 1; +} +#else +__EXPORT int matherr(struct exception *e) +{ + return 1; +} +#endif + +__EXPORT int nsh_archinitialize(void) +{ + int result; + + /* configure always-on ADC pins */ + stm32_configgpio(GPIO_ADC1_IN10); + stm32_configgpio(GPIO_ADC1_IN11); + /* IN12 and IN13 further below */ + + /* configure the high-resolution time/callout interface */ + hrt_init(); + + /* configure CPU load estimation */ +#ifdef CONFIG_SCHED_INSTRUMENTATION + cpuload_initialize_once(); +#endif + + /* set up the serial DMA polling */ + static struct hrt_call serial_dma_call; + struct timespec ts; + + /* + * Poll at 1ms intervals for received bytes that have not triggered + * a DMA event. + */ + ts.tv_sec = 0; + ts.tv_nsec = 1000000; + + hrt_call_every(&serial_dma_call, + ts_to_abstime(&ts), + ts_to_abstime(&ts), + (hrt_callout)stm32_serial_dma_poll, + NULL); + + /* initial LED state */ + drv_led_start(); + led_off(LED_AMBER); + led_on(LED_BLUE); + + + /* Configure SPI-based devices */ + + spi1 = up_spiinitialize(1); + + if (!spi1) { + message("[boot] FAILED to initialize SPI port 1\r\n"); + up_ledon(LED_AMBER); + return -ENODEV; + } + + /* Default SPI1 to 1MHz and de-assert the known chip selects. */ + SPI_SETFREQUENCY(spi1, 10000000); + SPI_SETBITS(spi1, 8); + SPI_SETMODE(spi1, SPIDEV_MODE3); + SPI_SELECT(spi1, PX4_SPIDEV_GYRO, false); + SPI_SELECT(spi1, PX4_SPIDEV_ACCEL, false); + SPI_SELECT(spi1, PX4_SPIDEV_MPU, false); + up_udelay(20); + + message("[boot] Successfully initialized SPI port 1\r\n"); + + /* + * If SPI2 is enabled in the defconfig, we loose some ADC pins as chip selects. + * Keep the SPI2 init optional and conditionally initialize the ADC pins + */ + spi2 = up_spiinitialize(2); + + if (!spi2) { + message("[boot] Enabling IN12/13 instead of SPI2\n"); + /* no SPI2, use pins for ADC */ + stm32_configgpio(GPIO_ADC1_IN12); + stm32_configgpio(GPIO_ADC1_IN13); // jumperable to MPU6000 DRDY on some boards + } else { + /* Default SPI2 to 1MHz and de-assert the known chip selects. */ + SPI_SETFREQUENCY(spi2, 10000000); + SPI_SETBITS(spi2, 8); + SPI_SETMODE(spi2, SPIDEV_MODE3); + SPI_SELECT(spi2, PX4_SPIDEV_GYRO, false); + SPI_SELECT(spi2, PX4_SPIDEV_ACCEL_MAG, false); + + message("[boot] Initialized SPI port2 (ADC IN12/13 blocked)\n"); + } + + /* Get the SPI port for the microSD slot */ + + message("[boot] Initializing SPI port 3\n"); + spi3 = up_spiinitialize(3); + + if (!spi3) { + message("[boot] FAILED to initialize SPI port 3\n"); + up_ledon(LED_AMBER); + return -ENODEV; + } + + message("[boot] Successfully initialized SPI port 3\n"); + + /* Now bind the SPI interface to the MMCSD driver */ + result = mmcsd_spislotinitialize(CONFIG_NSH_MMCSDMINOR, CONFIG_NSH_MMCSDSLOTNO, spi3); + + if (result != OK) { + message("[boot] FAILED to bind SPI port 3 to the MMCSD driver\n"); + up_ledon(LED_AMBER); + return -ENODEV; + } + + message("[boot] Successfully bound SPI port 3 to the MMCSD driver\n"); + + return OK; +} |