1.6.18.5 1.7.19.5 1.8.15.5 1.25.14.5 1.26.13.5 1.27.14.5 1.28.17.5 1.32.21.5 1.34.12.5 1.42.12.5 QSPIx_MemoryRead Function
C
// x - Instance of the QSPI peripheral bool QSPIx_MemoryRead ( qspi_memory_xfer_t *qspi_memory_xfer, uint32_t *rx_data, uint32_t rx_data_length, uint32_t address );
Summary
Reads from the specified address of the serial flash device.
Description
This function can be used to read n bytes of data from the specified address of the serial flash device connected as a QSPI slave.
Precondition
QSPIx_Initialize must have been called for the associated QSPI instance.
Parameters
Param | Description |
---|---|
*qspi_memory_xfer | pointer to QSPI memory transfer structure holding the instructioncode register and instruction frame register information. |
*rx_data | Pointer to receive buffer where the data read from memory will be stored. |
rx_data_length | number of bytes to read. |
address | Memory location to read from. |
Returns
-
True on transfer request success.
-
False on transfer request failure.
Example
#define READ_MEMORY_CODE 0x0B static qspi_memory_xfer_t qspi_memory_xfer; static uint32_t buffer[4]; uint32_t address = 0x0 // Read memory location starting from address 0x0 qspi_memory_xfer.instruction = READ_MEMORY_CODE; // Use QAUD SPI Lane qspi_memory_xfer.width = QUAD_CMD; qspi_memory_xfer.dummy_cycles = 6; if (QSPI0_MemoryRead(&qspi_memory_xfer, buffer, sizeof(buffer), address) == false) { // Handle Error }