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author | Lorenz Meier <lm@inf.ethz.ch> | 2014-03-03 10:32:01 +0100 |
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committer | Lorenz Meier <lm@inf.ethz.ch> | 2014-03-03 10:32:01 +0100 |
commit | 5cefd4811f7913402baabf93939ed4fbf4727654 (patch) | |
tree | 5e97cf7a45c4c5b7fd6e01e05e2ec87bd2aaf2aa /src/drivers/boards/px4fmu-v2/px4fmu2_init.c | |
parent | 7bb583d6e21a0fa7e51f147d23997aaeb7e218c9 (diff) | |
parent | 3dd3ba4637bfe6d665f20c1e5712ac22131b5b22 (diff) | |
download | px4-firmware-mavlink_variable_length.tar.gz px4-firmware-mavlink_variable_length.tar.bz2 px4-firmware-mavlink_variable_length.zip |
Merged with master, cleanup of varlength prototypemavlink_variable_length
Diffstat (limited to 'src/drivers/boards/px4fmu-v2/px4fmu2_init.c')
-rw-r--r-- | src/drivers/boards/px4fmu-v2/px4fmu2_init.c | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/src/drivers/boards/px4fmu-v2/px4fmu2_init.c b/src/drivers/boards/px4fmu-v2/px4fmu2_init.c new file mode 100644 index 000000000..71414d62c --- /dev/null +++ b/src/drivers/boards/px4fmu-v2/px4fmu2_init.c @@ -0,0 +1,332 @@ +/**************************************************************************** + * + * Copyright (C) 2012 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/sdio.h> +#include <nuttx/mmcsd.h> +#include <nuttx/analog/adc.h> +#include <nuttx/gran.h> + +#include <stm32.h> +#include "board_config.h" +#include <stm32_uart.h> + +#include <arch/board/board.h> + +#include <drivers/drv_hrt.h> +#include <drivers/drv_led.h> + +#include <systemlib/cpuload.h> +#include <systemlib/perf_counter.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 + +/**************************************************************************** + * Protected Functions + ****************************************************************************/ + +#if defined(CONFIG_FAT_DMAMEMORY) +# if !defined(CONFIG_GRAN) || !defined(CONFIG_FAT_DMAMEMORY) +# error microSD DMA support requires CONFIG_GRAN +# endif + +static GRAN_HANDLE dma_allocator; + +/* + * The DMA heap size constrains the total number of things that can be + * ready to do DMA at a time. + * + * For example, FAT DMA depends on one sector-sized buffer per filesystem plus + * one sector-sized buffer per file. + * + * We use a fundamental alignment / granule size of 64B; this is sufficient + * to guarantee alignment for the largest STM32 DMA burst (16 beats x 32bits). + */ +static uint8_t g_dma_heap[8192] __attribute__((aligned(64))); +static perf_counter_t g_dma_perf; + +static void +dma_alloc_init(void) +{ + dma_allocator = gran_initialize(g_dma_heap, + sizeof(g_dma_heap), + 7, /* 128B granule - must be > alignment (XXX bug?) */ + 6); /* 64B alignment */ + if (dma_allocator == NULL) { + message("[boot] DMA allocator setup FAILED"); + } else { + g_dma_perf = perf_alloc(PC_COUNT, "DMA allocations"); + } +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/* + * DMA-aware allocator stubs for the FAT filesystem. + */ + +__EXPORT void *fat_dma_alloc(size_t size); +__EXPORT void fat_dma_free(FAR void *memory, size_t size); + +void * +fat_dma_alloc(size_t size) +{ + perf_count(g_dma_perf); + return gran_alloc(dma_allocator, size); +} + +void +fat_dma_free(FAR void *memory, size_t size) +{ + gran_free(dma_allocator, memory, size); +} + +#else + +# define dma_alloc_init() + +#endif + +/************************************************************************************ + * 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 */ + up_ledinit(); +} + +/**************************************************************************** + * Name: nsh_archinitialize + * + * Description: + * Perform architecture specific initialization + * + ****************************************************************************/ + +static struct spi_dev_s *spi1; +static struct spi_dev_s *spi2; +static struct sdio_dev_s *sdio; + +#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) +{ + + /* configure ADC pins */ + stm32_configgpio(GPIO_ADC1_IN2); /* BATT_VOLTAGE_SENS */ + stm32_configgpio(GPIO_ADC1_IN3); /* BATT_CURRENT_SENS */ + stm32_configgpio(GPIO_ADC1_IN4); /* VDD_5V_SENS */ + // stm32_configgpio(GPIO_ADC1_IN10); /* used by VBUS valid */ + // stm32_configgpio(GPIO_ADC1_IN11); /* unused */ + // stm32_configgpio(GPIO_ADC1_IN12); /* used by MPU6000 CS */ + stm32_configgpio(GPIO_ADC1_IN13); /* FMU_AUX_ADC_1 */ + stm32_configgpio(GPIO_ADC1_IN14); /* FMU_AUX_ADC_2 */ + stm32_configgpio(GPIO_ADC1_IN15); /* PRESSURE_SENS */ + + /* configure power supply control/sense pins */ + stm32_configgpio(GPIO_VDD_5V_PERIPH_EN); + stm32_configgpio(GPIO_VDD_3V3_SENSORS_EN); + stm32_configgpio(GPIO_VDD_BRICK_VALID); + stm32_configgpio(GPIO_VDD_SERVO_VALID); + stm32_configgpio(GPIO_VDD_5V_HIPOWER_OC); + stm32_configgpio(GPIO_VDD_5V_PERIPH_OC); + + /* configure the high-resolution time/callout interface */ + hrt_init(); + + /* configure the DMA allocator */ + dma_alloc_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); + + /* Configure SPI-based devices */ + + spi1 = up_spiinitialize(1); + + if (!spi1) { + message("[boot] FAILED to initialize SPI port 1\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_MAG, false); + SPI_SELECT(spi1, PX4_SPIDEV_BARO, false); + SPI_SELECT(spi1, PX4_SPIDEV_MPU, false); + up_udelay(20); + + message("[boot] Initialized SPI port 1 (SENSORS)\n"); + + /* Get the SPI port for the FRAM */ + + spi2 = up_spiinitialize(2); + + if (!spi2) { + message("[boot] FAILED to initialize SPI port 2\n"); + up_ledon(LED_AMBER); + return -ENODEV; + } + + /* Default SPI2 to 37.5 MHz (40 MHz rounded to nearest valid divider, F4 max) + * and de-assert the known chip selects. */ + + // XXX start with 10.4 MHz in FRAM usage and go up to 37.5 once validated + SPI_SETFREQUENCY(spi2, 12 * 1000 * 1000); + SPI_SETBITS(spi2, 8); + SPI_SETMODE(spi2, SPIDEV_MODE3); + SPI_SELECT(spi2, SPIDEV_FLASH, false); + + message("[boot] Initialized SPI port 2 (RAMTRON FRAM)\n"); + + #ifdef CONFIG_MMCSD + /* First, get an instance of the SDIO interface */ + + sdio = sdio_initialize(CONFIG_NSH_MMCSDSLOTNO); + if (!sdio) { + message("[boot] Failed to initialize SDIO slot %d\n", + CONFIG_NSH_MMCSDSLOTNO); + return -ENODEV; + } + + /* Now bind the SDIO interface to the MMC/SD driver */ + int ret = mmcsd_slotinitialize(CONFIG_NSH_MMCSDMINOR, sdio); + if (ret != OK) { + message("[boot] Failed to bind SDIO to the MMC/SD driver: %d\n", ret); + return ret; + } + + /* Then let's guess and say that there is a card in the slot. There is no card detect GPIO. */ + sdio_mediachange(sdio, true); + + message("[boot] Initialized SDIO\n"); + #endif + + return OK; +} |