【嵌入式Linux】15-裸机-NXP官方SDK使用
此笔记由个人整理塞上苍鹰_fly课程来自：正点原子_手把手教你学Linux一、官方SDK移植1、新建cc.h文件SDK包里面会使用到很多数据类型，所以我们需要在cc.h里面定义一些常用的数据类型2、移植文件设备为MCIMX6Y2MCIMX6Y2.hfsl_common.hfsl_iomuxc.h3、修改移植文件fsl_common.h删除所有包含的头文件，包含进入自己定义的cc.h文件删除**ty
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此笔记由个人整理
塞上苍鹰_fly
课程来自：正点原子_手把手教你学Linux
一、官方SDK移植
1、新建cc.h文件
- SDK包里面会使用到很多数据类型，所以我们需要在cc.h里面定义一些常用的数据类型
2、移植文件
-
设备为MCIMX6Y2
-
MCIMX6Y2.h
- fsl_common.h
- fsl_iomuxc.h
3、修改移植文件
- fsl_common.h
- 删除所有包含的头文件，包含进入自己定义的cc.h文件
- 删除**typedef int32_t status_t;**后的所有
- 在最后添加**#endif /* FSL_COMMON_H /*
#ifndef _FSL_COMMON_H_
#define _FSL_COMMON_H_
#include "cc.h" /* cc.h为自行添加的文件 */
/*!
* @addtogroup ksdk_common
* @{
*/
/*******************************************************************************
* Definitions
******************************************************************************/
/*! @brief Construct a status code value from a group and code number. */
#define MAKE_STATUS(group, code) ((((group)*100) + (code)))
/*! @brief Construct the version number for drivers. */
#define MAKE_VERSION(major, minor, bugfix) (((major) << 16) | ((minor) << 8) | (bugfix))
/* Debug console type definition. */
#define DEBUG_CONSOLE_DEVICE_TYPE_NONE 0U /*!< No debug console. */
#define DEBUG_CONSOLE_DEVICE_TYPE_UART 1U /*!< Debug console base on UART. */
#define DEBUG_CONSOLE_DEVICE_TYPE_LPUART 2U /*!< Debug console base on LPUART. */
#define DEBUG_CONSOLE_DEVICE_TYPE_LPSCI 3U /*!< Debug console base on LPSCI. */
#define DEBUG_CONSOLE_DEVICE_TYPE_USBCDC 4U /*!< Debug console base on USBCDC. */
#define DEBUG_CONSOLE_DEVICE_TYPE_FLEXCOMM 5U /*!< Debug console base on USBCDC. */
#define DEBUG_CONSOLE_DEVICE_TYPE_IUART 6U /*!< Debug console base on i.MX UART. */
#define DEBUG_CONSOLE_DEVICE_TYPE_VUSART 7U /*!< Debug console base on LPC_USART. */
/*! @brief Status group numbers. */
enum _status_groups
{
。。。
};
/*! @brief Generic status return codes. */
enum _generic_status
{
kStatus_Success = MAKE_STATUS(kStatusGroup_Generic, 0),
kStatus_Fail = MAKE_STATUS(kStatusGroup_Generic, 1),
kStatus_ReadOnly = MAKE_STATUS(kStatusGroup_Generic, 2),
kStatus_OutOfRange = MAKE_STATUS(kStatusGroup_Generic, 3),
kStatus_InvalidArgument = MAKE_STATUS(kStatusGroup_Generic, 4),
kStatus_Timeout = MAKE_STATUS(kStatusGroup_Generic, 5),
kStatus_NoTransferInProgress = MAKE_STATUS(kStatusGroup_Generic, 6),
};
/*! @brief Type used for all status and error return values. */
typedef int32_t status_t;
#endif /* _FSL_COMMON_H_ */
- fsl_iomuxc.h
- 添加头文件MCIMX6Y2.h
- 删除**#define IOMUXC_GRP_DDR_TYPE后的#if defined(__cplusplus)**等三行
- 将static inline void IOMUXC_SetPinConfig函数后面的全部删除
- 在最后一行添加**#endif /* FSL_IOMUXC_H /*
#ifndef _FSL_IOMUXC_H_
#define _FSL_IOMUXC_H_
#include "MCIMX6Y2.h"
#include "fsl_common.h"
/*!
* @addtogroup iomuxc_driver
* @{
*/
/*! @file */
/*******************************************************************************
* Definitions
******************************************************************************/
/*! @name Driver version */
/*@{*/
/*! @brief IOMUXC driver version 2.0.0. */
#define FSL_IOMUXC_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
/*@}*/
/*! @name Pin function ID */
/*@{*/
/*! @brief The pin function ID is a tuple of <muxRegister muxMode inputRegister inputDaisy configRegister> */
#define IOMUXC_SNVS_BOOT_MODE0_GPIO5_IO10 0x02290000U, 0x5U, 0x00000000U, 0x0U, 0x02290044U
#define IOMUXC_SNVS_BOOT_MODE1_GPIO5_IO11 0x02290004U, 0x5U, 0x00000000U, 0x0U, 0x02290048U
#define IOMUXC_SNVS_SNVS_TAMPER0_GPIO5_IO00 0x02290008U, 0x5U, 0x00000000U, 0x0U, 0x0229004CU
#define IOMUXC_SNVS_SNVS_TAMPER1_GPIO5_IO01 0x0229000CU, 0x5U, 0x00000000U, 0x0U, 0x02290050U
。。。。。。
/*! @name Configuration */
/*@{*/
/*!
* @brief Sets the IOMUXC pin mux mode.
* @note The first five parameters can be filled with the pin function ID macros.
*
* This is an example to set the ENET1_RX_DATA0 Pad as FLEXCAN1_TX:
* @code
* IOMUXC_SetPinMux(IOMUXC_ENET1_RX_DATA0_FLEXCAN1_TX, 0);
* @endcode
*
* This is an example to set the GPIO1_IO02 Pad as I2C1_SCL:
* @code
* IOMUXC_SetPinMux(IOMUXC_GPIO1_IO02_I2C1_SCL, 0);
* @endcode
*
* @param muxRegister The pin mux register.
* @param muxMode The pin mux mode.
* @param inputRegister The select input register.
* @param inputDaisy The input daisy.
* @param configRegister The config register.
* @param inputOnfield Software input on field.
*/
static inline void IOMUXC_SetPinMux(uint32_t muxRegister,
uint32_t muxMode,
uint32_t inputRegister,
uint32_t inputDaisy,
uint32_t configRegister,
uint32_t inputOnfield)
{
*((volatile uint32_t *)muxRegister) =
IOMUXC_SW_MUX_CTL_PAD_MUX_MODE(muxMode) | IOMUXC_SW_MUX_CTL_PAD_SION(inputOnfield);
if (inputRegister)
{
*((volatile uint32_t *)inputRegister) = IOMUXC_SELECT_INPUT_DAISY(inputDaisy);
}
}
/*!
* @brief Sets the IOMUXC pin configuration.
* @note The previous five parameters can be filled with the pin function ID macros.
*
* This is an example to set pin configuration for IOMUXC_GPIO1_IO02_I2C1_SCL:
* @code
* IOMUXC_SetPinConfig(IOMUXC_GPIO1_IO02_I2C1_SCL, IOMUXC_SW_PAD_CTL_PAD_PUE_MASK | IOMUXC_SW_PAD_CTL_PAD_PUS(2U));
* @endcode
*
* @param muxRegister The pin mux register.
* @param muxMode The pin mux mode.
* @param inputRegister The select input register.
* @param inputDaisy The input daisy.
* @param configRegister The config register.
* @param configValue The pin config value.
*/
static inline void IOMUXC_SetPinConfig(uint32_t muxRegister,
uint32_t muxMode,
uint32_t inputRegister,
uint32_t inputDaisy,
uint32_t configRegister,
uint32_t configValue)
{
if (configRegister)
{
*((volatile uint32_t *)configRegister) = configValue;
}
}
#endif /* _FSL_IOMUXC_H_ */
- MCIMX6Y2.h
- 删除所有包含的头文件，包含进入自己定义的cc.h文件
/*!
* @file MCIMX6Y2.h
* @version 3.0
* @date 2017-02-28
* @brief CMSIS Peripheral Access Layer for MCIMX6Y2
*
* CMSIS Peripheral Access Layer for MCIMX6Y2
*/
#ifndef _MCIMX6Y2_H_
#define _MCIMX6Y2_H_ /**< Symbol preventing repeated inclusion */
#include "cc.h"
/** Memory map major version (memory maps with equal major version number are
* compatible) */
#define MCU_MEM_MAP_VERSION 0x0300U
/** Memory map minor version */
#define MCU_MEM_MAP_VERSION_MINOR 0x0000U
/* ----------------------------------------------------------------------------
-- Interrupt vector numbers
---------------------------------------------------------------------------- */
/*!
* @addtogroup Interrupt_vector_numbers Interrupt vector numbers
* @{
*/
/** Interrupt Number Definitions */
#define NUMBER_OF_INT_VECTORS 160 /**< Number of interrupts in the Vector table */
typedef enum IRQn {
/* Auxiliary constants */
NotAvail_IRQn = -128, /**< Not available device specific interrupt */
/* Core interrupts */
Software0_IRQn = 0, /**< Cortex-A7 Software Generated Interrupt 0 */
。。。。。。
PMU_IRQ2_IRQn = 159 /**< Brown-out event on either core, gpu or soc regulators. */
} IRQn_Type;
/*!
* @}
*/ /* end of group Interrupt_vector_numbers */
/* ----------------------------------------------------------------------------
-- Configuration of the Cortex-A7 Processor and Core Peripherals
---------------------------------------------------------------------------- */
/*!
* @addtogroup Cortex_Core_Configuration Configuration of the Cortex-A7 Processor and Core Peripherals
* @{
*/
#define __CA7_REV 0x0005 /**< Core revision r0p5 */
#define __GIC_PRIO_BITS 5 /**< Number of Bits used for Priority Levels */
#define __FPU_PRESENT 1 /**< FPU present or not */
/*!
* @}
*/ /* end of group Cortex_Core_Configuration */
/* ----------------------------------------------------------------------------
-- Mapping Information
---------------------------------------------------------------------------- */
/*!
* @addtogroup Mapping_Information Mapping Information
* @{
*/
/** Mapping Information */
/*!
* @addtogroup iomuxc_pads
* @{ */
/*******************************************************************************
* Definitions
*******************************************************************************/
/*!
* @brief Enumeration for the IOMUXC SW_MUX_CTL_PAD
*
* Defines the enumeration for the IOMUXC SW_MUX_CTL_PAD collections.
*/
typedef enum _iomuxc_sw_mux_ctl_pad
{
kIOMUXC_SW_MUX_CTL_PAD_JTAG_MOD = 0U, /**< IOMUXC SW_MUX_CTL_PAD index */
kIOMUXC_SW_MUX_CTL_PAD_JTAG_TMS = 1U, /**< IOMUXC SW_MUX_CTL_PAD index */
kIOMUXC_SW_MUX_CTL_PAD_JTAG_TDO = 2U, /**< IOMUXC SW_MUX_CTL_PAD index */
kIOMUXC_SW_MUX_CTL_PAD_JTAG_TDI = 3U, /**< IOMUXC SW_MUX_CTL_PAD index */
kIOMUXC_SW_MUX_CTL_PAD_JTAG_TCK = 4U, /**< IOMUXC SW_MUX_CTL_PAD index */
kIOMUXC_SW_MUX_CTL_PAD_JTAG_TRST_B = 5U, /**< IOMUXC SW_MUX_CTL_PAD index */
kIOMUXC_SW_MUX_CTL_PAD_GPIO1_IO00 = 6U, /**< IOMUXC SW_MUX_CTL_PAD index */
kIOMUXC_SW_MUX_CTL_PAD_GPIO1_IO01 = 7U, /**< IOMUXC SW_MUX_CTL_PAD index */
。。。。。。
#define NXP_VAL2FLD(field, value) (((value) << (field ## _SHIFT)) & (field ## _MASK))
/**
* @brief Mask and right-shift a register value to extract a bit field value.
* @param field Name of the register bit field.
* @param value Value of the register.
* @return Masked and shifted bit field value.
*/
#define NXP_FLD2VAL(field, value) (((value) & (field ## _MASK)) >> (field ## _SHIFT))
/*!
* @}
*/ /* end of group Bit_Field_Generic_Macros */
/* ----------------------------------------------------------------------------
-- SDK Compatibility
---------------------------------------------------------------------------- */
/*!
* @addtogroup SDK_Compatibility_Symbols SDK Compatibility
* @{
*/
/* No SDK compatibility issues. */
/*!
* @}
*/ /* end of group SDK_Compatibility_Symbols */
#endif /* _MCIMX6Y2_H_ */
4、修改main函数
- 修改
- 添加新导入的三个头文件
- 使用头文件中的函数设置引脚复用和电气属性
- IOMUXC_SetPinMux（引脚复用）
- IOMUXC_SetPinConfig（电气属性）
#include "fsl_common.h"
#include "fsl_iomuxc.h"
#include "MCIMX6Y2.h"
/*使能外设时钟*/
void clk_enable(void)
{
CCM->CCGR0 = 0xffffffff;
CCM->CCGR1 = 0xffffffff;
CCM->CCGR2 = 0xffffffff;
CCM->CCGR3 = 0xffffffff;
CCM->CCGR4 = 0xffffffff;
CCM->CCGR5 = 0xffffffff;
CCM->CCGR6 = 0xffffffff;
}
/*初始化led*/
void led_init(void)
{
/*设置复用*/
IOMUXC_SetPinMux(IOMUXC_GPIO1_IO03_GPIO1_IO03,0);
/*设置电气属性*/
IOMUXC_SetPinConfig(IOMUXC_GPIO1_IO03_GPIO1_IO03,0x10B0);
GPIO1->GDIR = 0x0000008; /*设置为输出*/
GPIO1->DR = 0x0; /*打开led*/
}
/*短延时*/
void delay_short(volatile unsigned int n)
{
while(n--){}
}
/*长延时(大概一毫秒)*/
/*n:延时毫秒数*/
void delay(volatile unsigned int n)
{
while(n--){
delay_short(0x7ff);
}
}
/*打开led*/
void led_on(void)
{
GPIO1->DR &= ~(1<<3); /*bit3清零*/
}
/*关闭led*/
void led_off(void)
{
GPIO1->DR |= (1<<3); /*bit3置一*/
}
/*主函数*/
int main(void)
{
/*使能外设时钟*/
clk_enable();
/*初始化led*/
led_init();
/*设置led闪烁*/
while(1)
{
led_on();
delay(500);
led_off();
delay(500);
}
return 0;
}
5、修改其余文件
- start.s汇编文件
.global _start
.global _bss_start
.global _bss_end
_bss_start:
.word __bss_start
_bss_end:
.word __bss_end
_start:
/* 设置处理器进入SVC模式 */
mrs r0,cpsr /* 读取CPSR到R0 */
bic r0,r0,#0x1f /* 对CPSR低五位清零 */
orr r0,r0,#0x13 /* 使用SVC模式 */
msr cpsr,r0 /* 将R0写入到CPSR中 */
/* 清除bss段*/
ldr r0,_bss_start
ldr r1,_bss_end
mov r2,#0
bss_loop:
stmia r0!,{r2}
cmp r0,r1 /* 比较R0和R1里面的值*/
ble bss_loop /* 如果r0地址小于等于r1，继续清除bss段*/
/* 设置SP指针 */
ldr sp,=0x80200000
b main /* 跳转到main函数中 */
- .lds链接文件
SECTIONS{
. = 0X87800000;
.text :
{
start.o
*(.text)
}
.rodata ALIGN(4) : {*(.rodata)}
.data ALIGN(4) : {*(.data)}
__bss_start =.;
.bss ALIGN(4) : {*(.bss) *(COMMON)}
__bss_end =.;
}
- Makefile
CROSS_COMPILE ?= arm-linux-gnueabihf-
NAME ?= ledc
CC := $(CROSS_COMPILE)gcc
LD := $(CROSS_COMPILE)ld
OBJCOPY := $(CROSS_COMPILE)objcopy
OBJDUMP := $(CROSS_COMPILE)objdump
OBJS := start.o main.o
$(NAME).bin : $(OBJS)
$(LD) -Timx6u.lds -o $(NAME).elf $^
$(OBJCOPY) -O binary -S $(NAME).elf $@
$(OBJDUMP) -D -m arm $(NAME).elf > $(NAME).dis
%.o : %.c
$(CC) -Wall -nostdlib -c -O2 -o $@ $<
%.o : %.s
$(CC) -Wall -nostdlib -c -O2 -o $@ $<
clean:
rm -rf *.o $(NAME).bin $(NAME).elf $(NAME).dis
二、编译验证
- 编译
- 下载到SD卡中
- 将SD卡插入开发板，led进行闪烁
三、IO函数
- 定义的GPIO1_IO03，与后面的函数对应属性
#define IOMUXC_GPIO1_IO03_GPIO1_IO03 0x020E0068U, 0x5U, 0x00000000U, 0x0U, 0x020E02F4U
/*
uint32_t muxRegister, 0x020E0068U
uint32_t muxMode, 0x5U
uint32_t inputRegister, 0x00000000U
uint32_t inputDaisy, 0x0U
uint32_t configRegister, 0x020E02F4U
uint32_t inputOnfield或uint32_t configValue 输入的值自己写
*/
- 引脚复用函数
/*!
* @brief Sets the IOMUXC pin mux mode.
* @note The first five parameters can be filled with the pin function ID macros.
*
* This is an example to set the ENET1_RX_DATA0 Pad as FLEXCAN1_TX:
* @code
* IOMUXC_SetPinMux(IOMUXC_ENET1_RX_DATA0_FLEXCAN1_TX, 0);
* @endcode
*
* This is an example to set the GPIO1_IO02 Pad as I2C1_SCL:
* @code
* IOMUXC_SetPinMux(IOMUXC_GPIO1_IO02_I2C1_SCL, 0);
* @endcode
*
* @param muxRegister The pin mux register.
* @param muxMode The pin mux mode.
* @param inputRegister The select input register.
* @param inputDaisy The input daisy.
* @param configRegister The config register.
* @param inputOnfield Software input on field.
*/
static inline void IOMUXC_SetPinMux(uint32_t muxRegister,
uint32_t muxMode,
uint32_t inputRegister,
uint32_t inputDaisy,
uint32_t configRegister,
uint32_t inputOnfield)
{
*((volatile uint32_t *)muxRegister) =
IOMUXC_SW_MUX_CTL_PAD_MUX_MODE(muxMode) | IOMUXC_SW_MUX_CTL_PAD_SION(inputOnfield);
if (inputRegister)
{
*((volatile uint32_t *)inputRegister) = IOMUXC_SELECT_INPUT_DAISY(inputDaisy);
}
}
- 电气设置函数
/*!
* @brief Sets the IOMUXC pin configuration.
* @note The previous five parameters can be filled with the pin function ID macros.
*
* This is an example to set pin configuration for IOMUXC_GPIO1_IO02_I2C1_SCL:
* @code
* IOMUXC_SetPinConfig(IOMUXC_GPIO1_IO02_I2C1_SCL, IOMUXC_SW_PAD_CTL_PAD_PUE_MASK | IOMUXC_SW_PAD_CTL_PAD_PUS(2U));
* @endcode
*
* @param muxRegister The pin mux register.
* @param muxMode The pin mux mode.
* @param inputRegister The select input register.
* @param inputDaisy The input daisy.
* @param configRegister The config register.
* @param configValue The pin config value.
*/
static inline void IOMUXC_SetPinConfig(uint32_t muxRegister,
uint32_t muxMode,
uint32_t inputRegister,
uint32_t inputDaisy,
uint32_t configRegister,
uint32_t configValue)
{
if (configRegister)
{
*((volatile uint32_t *)configRegister) = configValue;
}
}
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