/* Includes ------------------------------------------------------------------*/
#include "sdcard.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define NULL 0
#define SDIO_STATIC_FLAGS ((uint32_t)0x000005FF)
#define SDIO_CMD0TIMEOUT ((uint32_t)0x00002710)
#define SDIO_FIFO_Address ((uint32_t)0x40018080)
/* Mask for errors Card Status R1 (OCR Register) */
#define SD_OCR_ADDR_OUT_OF_RANGE ((uint32_t)0x80000000)
#define SD_OCR_ADDR_MISALIGNED ((uint32_t)0x40000000)
#define SD_OCR_BLOCK_LEN_ERR ((uint32_t)0x20000000)
#define SD_OCR_ERASE_SEQ_ERR ((uint32_t)0x10000000)
#define SD_OCR_BAD_ERASE_PARAM ((uint32_t)0x08000000)
#define SD_OCR_WRITE_PROT_VIOLATION ((uint32_t)0x04000000)
#define SD_OCR_LOCK_UNLOCK_FAILED ((uint32_t)0x01000000)
#define SD_OCR_COM_CRC_FAILED ((uint32_t)0x00800000)
#define SD_OCR_ILLEGAL_CMD ((uint32_t)0x00400000)
#define SD_OCR_CARD_ECC_FAILED ((uint32_t)0x00200000)
#define SD_OCR_CC_ERROR ((uint32_t)0x00100000)
#define SD_OCR_GENERAL_UNKNOWN_ERROR ((uint32_t)0x00080000)
#define SD_OCR_STREAM_READ_UNDERRUN ((uint32_t)0x00040000)
#define SD_OCR_STREAM_WRITE_OVERRUN ((uint32_t)0x00020000)
#define SD_OCR_CID_CSD_OVERWRIETE ((uint32_t)0x00010000)
#define SD_OCR_WP_ERASE_SKIP ((uint32_t)0x00008000)
#define SD_OCR_CARD_ECC_DISABLED ((uint32_t)0x00004000)
#define SD_OCR_ERASE_RESET ((uint32_t)0x00002000)
#define SD_OCR_AKE_SEQ_ERROR ((uint32_t)0x00000008)
#define SD_OCR_ERRORBITS ((uint32_t)0xFDFFE008)
/* Masks for R6 Response */
#define SD_R6_GENERAL_UNKNOWN_ERROR ((uint32_t)0x00002000)
#define SD_R6_ILLEGAL_CMD ((uint32_t)0x00004000)
#define SD_R6_COM_CRC_FAILED ((uint32_t)0x00008000)
#define SD_VOLTAGE_WINDOW_SD ((uint32_t)0x80100000)
#define SD_HIGH_CAPACITY ((uint32_t)0x40000000)
#define SD_STD_CAPACITY ((uint32_t)0x00000000)
#define SD_CHECK_PATTERN ((uint32_t)0x000001AA)
#define SD_MAX_VOLT_TRIAL ((uint32_t)0x0000FFFF)
#define SD_ALLZERO ((uint32_t)0x00000000)
#define SD_WIDE_BUS_SUPPORT ((uint32_t)0x00040000)
#define SD_SINGLE_BUS_SUPPORT ((uint32_t)0x00010000)
#define SD_CARD_LOCKED ((uint32_t)0x02000000)
#define SD_CARD_PROGRAMMING ((uint32_t)0x00000007)
#define SD_CARD_RECEIVING ((uint32_t)0x00000006)
#define SD_DATATIMEOUT ((uint32_t)0x000FFFFF)
#define SD_0TO7BITS ((uint32_t)0x000000FF)
#define SD_8TO15BITS ((uint32_t)0x0000FF00)
#define SD_16TO23BITS ((uint32_t)0x00FF0000)
#define SD_24TO31BITS ((uint32_t)0xFF000000)
#define SD_MAX_DATA_LENGTH ((uint32_t)0x01FFFFFF)
#define SD_HALFFIFO ((uint32_t)0x00000008)
#define SD_HALFFIFOBYTES ((uint32_t)0x00000020)
/* Command Class Supported */
#define SD_CCCC_LOCK_UNLOCK ((uint32_t)0x00000080)
#define SD_CCCC_WRITE_PROT ((uint32_t)0x00000040)
#define SD_CCCC_ERASE ((uint32_t)0x00000020)
/* Following commands are SD Card Specific commands.
SDIO_APP_CMD should be sent before sending these commands. */
#define SDIO_SEND_IF_COND ((uint32_t)0x00000008)
#define SDIO_INIT_CLK_DIV ((uint8_t)0xB2)
#define SDIO_TRANSFER_CLK_DIV ((uint8_t)0x1)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
static uint32_t CardType = SDIO_STD_CAPACITY_SD_CARD_V1_1;
static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;
static uint32_t DeviceMode = SD_POLLING_MODE;
static uint32_t TotalNumberOfBytes = 0, StopCondition = 0;
uint32_t *SrcBuffer, *DestBuffer;
__IO SD_Error TransferError = SD_OK;
__IO uint32_t TransferEnd = 0;
__IO uint32_t NumberOfBytes = 0;
SDIO_InitTypeDef SDIO_InitStructure;
SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
SDIO_DataInitTypeDef SDIO_DataInitStructure;
/* Private function prototypes -----------------------------------------------*/
static SD_Error CmdError(void);
static SD_Error CmdResp1Error(uint8_t cmd);
static SD_Error CmdResp7Error(void);
static SD_Error CmdResp3Error(void);
static SD_Error CmdResp2Error(void);
static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
static SD_Error SDEnWideBus(FunctionalState NewState);
static SD_Error IsCardProgramming(uint8_t *pstatus);
static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
static void GPIO_Configuration(void);
static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize);
static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Initializes the SD Card and put it into StandBy State (Ready
* for data transfer).
* @param None
* @retval : SD_Error: SD Card Error code.
*/
SD_Error SD_Init(void)
{
SD_Error errorstatus = SD_OK;
/* Configure SDIO interface GPIO */
GPIO_Configuration();
/* Enable the SDIO AHB Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);
/* Enable the DMA2 Clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
SDIO_DeInit();
errorstatus = SD_PowerON();
if (errorstatus != SD_OK)
{
/* CMD Response TimeOut (wait for CMDSENT flag) */
return(errorstatus);
}
errorstatus = SD_InitializeCards();
if (errorstatus != SD_OK)
{
/* CMD Response TimeOut (wait for CMDSENT flag) */
return(errorstatus);
}
/* Configure the SDIO peripheral */
/* HCLK = 72 MHz, SDIOCLK = 72 MHz, SDIO_CK = HCLK/(2 + 1) = 24 MHz */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
return(errorstatus);
}
/**
* @brief Enquires cards about their operating voltage and configures
* clock controls.
* @param None
* @retval : SD_Error: SD Card Error code.
*/
SD_Error SD_PowerON(void)
{
SD_Error errorstatus = SD_OK;
uint32_t response = 0, count = 0;
bool validvoltage = FALSE;
uint32_t SDType = SD_STD_CAPACITY;
/* Power ON Sequence -------------------------------------------------------*/
/* Configure the SDIO peripheral */
SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */
SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
SDIO_Init(&SDIO_InitStructure);
/* Set Power State to ON */
SDIO_SetPowerState(SDIO_PowerState_ON);
/* Enable SDIO Clock */
SDIO_ClockCmd(ENABLE);
/* CMD0: GO_IDLE_STATE -------------------------------------------------------*/
/* No CMD response required */
SDIO_CmdInitStructure.SDIO_Argument = 0x0;
SDIO_CmdInitStructure.SDIO_Cmd
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ARM微控制器使用FSMC 硬件直接驱动TFT-LCD代码
共23个文件
h:13个
c:10个
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2024-05-11
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FSMC作为一个灵活的静态存储控制器,与外部SRAM协同工作,作为帧缓冲区,而DMA通道则负责将图像数据快速传输到TFT-LCD,减轻CPU负担。MCU支持高达40帧每秒的帧率,适用于幻灯片和动画横幅等显示模式。此外,MCU通过定时器生成的PWM信号控制TFT背光,调节占空比实现亮度控制。整个显示控制过程通过MCU的硬件和软件优化,确保了高性能的图像显示和低CPU负载。 本资源为文章《ARM微控制器使用FSMC 硬件直接驱动TFT_LCD示例》的代码,配合文章理解更加充分,结合文章进行实践操作,能够快速熟悉FSMC驱动LCD的方法,并掌握DMA数据传送,时钟,LCD驱动等知识。
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FSMC.zip (23个子文件)
FSMC
mcu_it.h 1019B
fsmc_nor.h 2KB
fsmc_nor.c 13KB
sdcard.h 14KB
mcu_xxx.h 1.01MB
fsmc_nand.c 16KB
sdcard.c 87KB
system_mcu_xxx.h 993B
mcu_lcd.h 6KB
menu.c 75KB
menu.h 2KB
core_cm3.h 41KB
mcu_it.c 5KB
core_cm3.c 16KB
main.h 2KB
fonts.h 23KB
fsmc_sram.c 6KB
mcu_lcd.c 24KB
fsmc_nand.h 4KB
main.c 11KB
mcu_conf.h 2KB
system_mcu_xxx.c 22KB
fsmc_sram.h 821B
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