8.1.8 SPI Read Flash
Reads data from flash memory using SPI programming.
| Field | Size | Description |
|---|---|---|
| SPI_CMD_READ_FLASH | 1 byte | Command ID |
| NumBytes | 2 byte | Total number of bytes to read, MSB first |
| cmd1 | 1 byte |
Read Program Memory command byte #1. Low/high byte selection bit (bit 3) is handled by firmware. |
Response:
| Field | Size | Description |
|---|---|---|
| SPI_CMD_READ_FLASH | 1 byte | Command ID |
| Status1 | 1 byte | SPI_STATUS_CMD_OK |
| Data | n bytes | Data read from flash |
| Status | 1 byte |
SPI_STATUS_CMD_OK or SPI_STATUS_RDY_BSY_TOUT |