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最开始是ID为“RIFF”的chunk,Size为“RIFF”chunk数据字节长度,所以总文件大小为Size+8。一般来说,chunk不允许内部再包含chunk,但有两个例外,ID为“RIFF”和“LIST”的chunk却是允许。对此“RIFF”在其“数据”首4个字节用来存放“格式标识码(Form Type)”,“LIST”则对应“LIST Type”。 图36_0_10 RIFF...
res = RES_ERROR; }break;/* Get R/W sector size (WORD) */caseGET_SECTOR_SIZE :if(USBH_MSC_GetLUNInfo(&hUsbHostFS, lun, &info) == USBH_OK) { *(DWORD*)buff = info.capacity.block_size; res = RES_OK; }else{ res = RES_ERROR; }break;/* Get erase block size in unit of ...
lcd_show_string(30, 110, 200, 16, 16, "KEY0:Start", RED); len = sizeof(TEXT_TO_SEND); k = 0; for (i = 0; i < SEND_BUF_SIZE; i++) /* 填充ASCII字符集数据 */ {if (k >= len) /* 入换行符 */ {if (mask) {g_sendbuf[i] = 0x0a; k = 0; } else {g_sendbuf...
DMA_InitStructure.DMA_BufferSize = (uint32_t)BUFFER_SIZE; /*数据传输量*/ DMA_InitStructure.D...
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; //PSIZE=16bit DMA_In...
data Size:word to word ,也就是32位 到32位, 因为DCMI虽然接收的是8位数据,但是它凑够32位才会触发一次DMA请求,所以这样配置。 单次传输: 使用单次传输,而不要用突发传输,因为突发传输有传输尺寸的限制(1kb以内)。也可以采用循环模式。 DMA中断:正常来说应该不用的, 因为JPEG是不定长的数据,不能靠dma中断...
//answers.microsoft.com/en-us/msoffice/forum/all/i-am-having-trouble-printing-a-tabloid-size-excel/e0abe482-17b6-46f8-91dc-26196845b5fa 2025-01-27T17:38:31.8450000Z https://answers.microsoft.com/es-es/windows/forum/all/recuperar-permisos-de-usuario-quitados-por-un/25bcc107-e407-4423-...
*(WORD*)buff = FLASH_SECTOR_SIZE; res = RES_OK; break; case GET_BLOCK_SIZE: *(WORD*)buff = (WORD)FLASH_BLOCK_SIZE; res = RES_OK; break; case GET_SECTOR_COUNT: *(DWORD*)buff = FLASH_SECTOR_COUNT; res = RES_OK; break; ...
pTxBuffPtr， TxXferSize 和 TxXferCount 三个变量分别用来设置串口发送的数据缓存指针，发送的数据量和...