I am trying to use an external flash memory (TC58CVG1S3HxAIx) with NUCLEO-L476RG board. I can’t get the QSPI to work. I used STM32CubeMx to configure QSPI:
void MX_QUADSPI_Init(void)
{
hqspi.Instance = QUADSPI;
hqspi.Init.ClockPrescaler = 255;
hqspi.Init.FifoThreshold = 1;
hqspi.Init.SampleShifting = QSPI_SAMPLE_SHIFTING_NONE;
hqspi.Init.FlashSize = 30;
hqspi.Init.ChipSelectHighTime = QSPI_CS_HIGH_TIME_1_CYCLE;
hqspi.Init.ClockMode = QSPI_CLOCK_MODE_0;
if (HAL_QSPI_Init(&hqspi) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
void HAL_QSPI_MspInit(QSPI_HandleTypeDef* qspiHandle)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(qspiHandle->Instance==QUADSPI)
{
/* USER CODE BEGIN QUADSPI_MspInit 0 */
/* USER CODE END QUADSPI_MspInit 0 */
/* QUADSPI clock enable */
__HAL_RCC_QSPI_CLK_ENABLE();
/**QUADSPI GPIO Configuration
PA6 ------> QUADSPI_BK1_IO3
PA7 ------> QUADSPI_BK1_IO2
PB0 ------> QUADSPI_BK1_IO1
PB1 ------> QUADSPI_BK1_IO0
PB10 ------> QUADSPI_CLK
PB11 ------> QUADSPI_NCS
*/
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF10_QUADSPI;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF10_QUADSPI;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* USER CODE BEGIN QUADSPI_MspInit 1 */
/* USER CODE END QUADSPI_MspInit 1 */
}
}
And I wrote a simple program to get id from the flash memory:
#include "main.h"
#include "stm32l4xx_hal.h"
#include "quadspi.h"
#include "gpio.h"
uint8_t ReadAddr = 0x9F;
uint8_t pBuffer[3];
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_QUADSPI_Init();
while (1)
{
HAL_QSPI_Transmit(&hqspi, &ReadAddr, 5);
HAL_QSPI_Receive(&hqspi, pBuffer, 5);
}
}
The qspi clock doesn’t work. I checked on the oscilloscope and all I see is a straight line. If I change the qspi clock mode to high the problem is still there, but I see the line on 3V not 0V. The CS signal works, on the oscilloscope I can clearly see the time when uC should transmit and receive.
I checked AHB3ENR register and it is properly initialized. I have no idea what else could be wrong.
Could somebody help me?