Question
how to run QSPI ?
Post edited by ST moderator to be inline with the community rules for the code sharing. In next time please use </> button to paste your code and a linker script content. Please read this post: How to insert source code.
Hi everyone,
I'm trying to interface an ICNA3306 LCD display using STM32's QSPI peripheral. The LCD uses a custom protocol where commands are sent as:
- Instruction: 0x02 (8 bits, 1-wire)
- Address: 0x00, CMD, 0x00 (24 bits, 1-wire)
Expected behavior: 32 clock pulses (8 instruction + 24 address) Actual behavior: Only 8 clock pulses (instruction only - address phase not transmitted)
Here's my code:
HAL_StatusTypeDef ICNA3306_WriteCommand(uint8_t cmd)
{
QSPI_CommandTypeDef sCommand = {0};
sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;
sCommand.Instruction = 0x02;
sCommand.AddressMode = QSPI_ADDRESS_1_LINE;
sCommand.AddressSize = QSPI_ADDRESS_24_BITS;
sCommand.Address = (0x00 << 16) | (cmd << | 0x00;
sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE;
sCommand.DataMode = QSPI_DATA_NONE;
sCommand.DummyCycles = 0;
sCommand.DdrMode = QSPI_DDR_MODE_DISABLE;
sCommand.SIOOMode = QSPI_SIOO_INST_EVERY_CMD;
return HAL_QSPI_Command(&hqspi, &sCommand, HAL_MAX_DELAY);
}
QSPI Configuration:
hqspi.Init.ClockPrescaler = 13;
hqspi.Init.FifoThreshold = 4;
hqspi.Init.SampleShifting = QSPI_SAMPLE_SHIFTING_HALFCYCLE;
hqspi.Init.FlashSize = 23;
hqspi.Init.ChipSelectHighTime = QSPI_CS_HIGH_TIME_6_CYCLE;
hqspi.Init.ClockMode = QSPI_CLOCK_MODE_0;
Oscilloscope shows:
and then right waveform is below:(make QSPI using GPIO)
