程序函数分析(一),初始化函数SD_ErrorSD_Init(void){ /*重置SD_Error状态*/SD_Errorerrorstatus =SD_OK; /* SDIO 外设底层引脚初始化*/ GPIO_Configuration(); /*对SDIO的所有寄存器进行复... 初始化 ide 寄存器 数据 数据传输 转载 mb5fed4c003aebe ...
1. 硬件基础: http://blog.ednchina.com/yelov/198217/message.aspxSD/MMC/SDIO 概念区分概要SD(Secure Digital )与 MMC (MultimediaCard)SD是一种 flash memorycard的标准,也就是一般常见的SD记忆卡,而 MMC 则是较早的一种记忆卡标准,目前已经被SD标准所 ...
首先要判断卡的类型，类型不一样的话，初始化是不一样的；下面是我的初始化参数r1=SD_SendCommand(CMD55,0,0)；r1=SD_SendCommand(ACMD41,0,0);2.0时r1=SD_SendCommand(CMD55,0,0);r1=SD_SendCommand(ACMD41,0x40000000,0);要多循环几次，直到正确 ...
int main(void) { uint8_t text [100]; volatile uint32_t dlycnt; /* wait the power stable */ for (dlycnt = 0; dlycnt < 10000000; dlycnt++); /* Initializes LCD */ STM32f4_Discovery_LCD_Init(); /* Clear the LCD */ LCD_Clear(LCD_COLOR_WHITE); /* Set the LCD Text size ...
EPRINTF("Failed to init SD card."); if(!sdmmc_get_sd_inserted()) EPRINTF("Make sure that it is inserted."); else EPRINTF("SD Card Reader is not properly seated!"); } btn_wait(); 5bootloader/main.c @@ -1084,8 +1084,6 @@ static void _auto_launch_firmware() ...
static void MX_SDIO_SD_Init(void) { hsd.Instance = SDIO; hsd.Init.ClockEdge = SDIO_CLOCK_EDGE_RISING; hsd.Init.ClockBypass = SDIO_CLOCK_BYPASS_DISABLE; hsd.Init.ClockPowerSave = SDIO_CLOCK_POWER_SAVE_DISABLE; hsd.Init.BusWide = SDIO_BUS_WIDE_1B; hsd.Init.HardwareFlowControl = SDIO...
导致这个问题的原因是SD卡读rootfs 的时候出现问题,加延时或者多读几次就好了,emmc 也存在同样的问题。 [0.000000]On node 0 totalpages:244992[0.000000]free_area_init_node:node0,pgdatc0690700,node_mem_mapef6b0000[0.000000]Normal zone:1728pagesusedformemmap[0.000000]Normal zone:0pagesreserved[0.000000]...
throw new ClassNotFoundException('error session handler:' . $class, $class); } } if ($isDoStart) { session_start(); self::$init = true; } else { self::$init = false; } } /** * session自动启动或者初始化 * @return void Exception Datas Error Context config {...
voidScriviSd(void){intn; n =0;if(!sd.init(SPI_HALF_SPEED,10)) { sd.initErrorHalt();return; }if(!myFile.open("test-1.txt", O_WRITE | O_CREAT | O_APPEND)) { delay(800); digitalWrite(7, LOW); delay(200); digitalWrite(7, HIGH); ...
staticintdriver_remove_match(sd_bus *bus, sd_bus_message *message,void*userdata, sd_bus_error *error){structbus_match_component*components=NULL;_cleanup_free_char*normalized =NULL; Context *context = userdata;unsignedn_components =0;