Software QSPI for stm32f103

[diger67]

This idea was born accidentally. I connected memory to stm32f446 by QSPI, it did not work correctly. As I found out on the board, it was incorrect to mark two pins. I did not have any other stm32 with QSPI hardware, I had to write a software one. Measuring the read speed is not difficult. The material you suggested I read, it can turn out something useful.
P.s.
Look at the datasheet for this memory and you will understand what to implement on the proposed algorithm QSPI will be almost impossible.

[diger67]

I checked the dump reading time to 256 bytes. When initializing SysTick in 1 μs, the read time for the program QSPI is 1 ms.

Code: Select all

uint8_t idData[3];
uint8_t dataBuff[0x100];
static __IO uint32_t sysTickCounter;
__IO uint32_t uwTick = 0;
float	timeend;
uint32_t time;
uint32_t GetSysTick(void)
{
	return uwTick;
}
void SysTick_Handler(void)
{
	uwTick++;
}
int main(void)
{
	SysTick_Config(SystemCoreClock/1000000);	//1uS
	Gpio_Init();
	QSPIInit();
	QSPI_Read_ID(READ_ID_CHIP, idData, 3);
	time = GetSysTick();
	QSPI_data_read(0, 0x00, 6, dataBuff);
   timeend = (GetSysTick() - time)/1000 ;
    while(1)
    {
    }
}