Question
STM32H7B0 OCTA SPI not working for APS6404 QSPI RAM
Hi,
We try to send an receive data to the external APS6404 RAM.
Therefore we read the application note AN5050 and copy the function from page 55 (7.2.5).
At first the function HAL_RCCEx_OCTOSPIDelayConfig() we cannot find in the library.
What is correct function what we must us than or what we must change in the source code?
Without executing the function DelayBlock_Calibration() the MCU blocks when we read some data.
Here is our code:
#define LINEAR_BURST_READ 0x20
#define LINEAR_BURST_WRITE 0xA0
#define DUMMY_CLOCK_CYCLES_SRAM_READ 5
#define DUMMY_CLOCK_CYCLES_SRAM_WRITE 4
/* Exported macro -----------------------------------------------------*/
#define BUFFERSIZE (COUNTOF(aTxBuffer) - 1)
#define COUNTOF(__BUFFER__) (sizeof(__BUFFER__) / sizeof(*(__BUFFER__)))
#define DLYB_BUFFERSIZE (COUNTOF(Cal_buffer) - 1)
#define EXTENDEDBUFFERSIZE (1048576)
uint8_t aTxBuffer[] = " **OCTOSPI/Octal-spi PSRAM Memory-mapped communication example** " \
" **OCTOSPI/Octal-spi PSRAM Memory-mapped communication example** " \
" **OCTOSPI/Octal-spi PSRAM Memory-mapped communication example** ";
__IO uint8_t *mem_addr;
uint32_t address = 0;
uint16_t index1; /* index1 counter of bytes used when reading/
writing 256 bytes buffer */
uint16_t index2; /* index2 counter of 256 bytes buffer used when reading/
writing the 1Mbytes extended buffer */
void user_main(void) {
EnableMemMapped();
DelayBlock_Calibration();
test_memory();
}
void test_memory(void) {
mem_addr = (__IO uint8_t*) (OCTOSPI1_BASE + address);
/*Writing 1Mbyte (256Byte BUFFERSIZE x 4096 times) */
for (index2 = 0; index2 < EXTENDEDBUFFERSIZE / BUFFERSIZE; index2++) {
for (index1 = 0; index1 < BUFFERSIZE; index1++) {
*mem_addr = aTxBuffer[index1];
mem_addr++;
}
}
/*----------------------------------------------------------------------*/
/* Reading Sequence of 1Mbyte */
mem_addr = (__IO uint8_t*) (OCTOSPI1_BASE + address);
/*Reading 1Mbyte (256Byte BUFFERSIZE x 4096 times)*/
for (index2 = 0; index2 < EXTENDEDBUFFERSIZE/BUFFERSIZE; index2++) {
for (index1 = 0; index1 < BUFFERSIZE; index1++) {
if (*mem_addr != aTxBuffer[index1]) { // <<== blocks here
/*if data read is corrupted we can toggle a led here: example blue led*/
__NOP();
}
mem_addr++;
}
}
}
#if 1
void DelayBlock_Calibration(void) {
/*buffer used for calibration*/
uint8_t Cal_buffer[] = "****Delay Block Calibration Buffer ****" \
"****Delay Block Calibration Buffer ****" \
"****Delay Block Calibration Buffer ****" \
"****Delay Block Calibration Buffer ****" \
"****Delay Block Calibration Buffer ****" \
"****Delay Block Calibration Buffer ****";
uint16_t index;
__IO uint8_t *mem_addr;
uint8_t test_failed;
uint8_t delay = 0x0;
uint8_t Min_found = 0;
uint8_t Max_found = 0;
uint8_t Min_Window = 0x0;
uint8_t Max_Window = 0xF;
uint8_t Mid_window = 0;
uint8_t calibration_ongoing = 1;
/* Write the Cal_buffer to the memory*/
mem_addr = (__IO uint8_t*) (OCTOSPI1_BASE);
for (index = 0; index < DLYB_BUFFERSIZE; index++) {
*mem_addr = Cal_buffer[index];
mem_addr++;
}
while (calibration_ongoing) {
/* update the Delayblock calibration */
HAL_RCCEx_OCTOSPIDelayConfig(delay, 0); // <<== not found
test_failed = 0;
mem_addr = (__IO uint8_t*) (OCTOSPI1_BASE);
for (index = 0; index < DLYB_BUFFERSIZE; index++) {
/* Read the Cal_buffer from the memory*/
if (*mem_addr != Cal_buffer[index]) {
/*incorrect data read*/
test_failed = 1;
}
mem_addr++;
}
/* search for the Min window */
if (Min_found != 1) {
if (test_failed == 1) {
if (delay < 15) {
delay++;
} else {
/* If delay set to maximum and error still detected: can't use external
PSRAM */
Error_Handler();
}
} else {
Min_Window = delay;
Min_found = 1;
delay = 0xF;
}
}
/* search for the Max window */
else if (Max_found != 1) {
if (test_failed == 1) {
if (delay > 0) {
delay--;
} else {
/* If delay set to minimum and error still detected: can't use external
PSRAM */
Error_Handler();
}
} else {
Max_Window = delay;
Max_found = 1;
}
}
/* min and max delay window found, configure the delay block with the middle
window value and exit calibration */
else {
Mid_window = (Max_Window + Min_Window) / 2;
HAL_RCCEx_OCTOSPIDelayConfig(Mid_window, 0); // <<== not found
/* exit calibration */
calibration_ongoing = 0;
}
}
}
#endif
void EnableMemMapped(void) {
OSPI_RegularCmdTypeDef sCommand;
OSPI_MemoryMappedTypeDef sMemMappedCfg;
sCommand.FlashId = HAL_OSPI_FLASH_ID_1;
sCommand.InstructionMode = HAL_OSPI_INSTRUCTION_8_LINES;
sCommand.InstructionSize = HAL_OSPI_INSTRUCTION_8_BITS;
sCommand.InstructionDtrMode = HAL_OSPI_INSTRUCTION_DTR_DISABLE;
sCommand.AddressMode = HAL_OSPI_ADDRESS_8_LINES;
sCommand.AddressSize = HAL_OSPI_ADDRESS_32_BITS;
sCommand.AddressDtrMode = HAL_OSPI_ADDRESS_DTR_ENABLE;
sCommand.AlternateBytesMode = HAL_OSPI_ALTERNATE_BYTES_NONE;
sCommand.DataMode = HAL_OSPI_DATA_8_LINES;
sCommand.DataDtrMode = HAL_OSPI_DATA_DTR_ENABLE;
sCommand.DQSMode = HAL_OSPI_DQS_ENABLE;
sCommand.SIOOMode = HAL_OSPI_SIOO_INST_EVERY_CMD;
sCommand.Address = 0;
sCommand.NbData = 1;
/* Memory-mapped mode configuration for Linear burst write operations */
sCommand.OperationType = HAL_OSPI_OPTYPE_WRITE_CFG;
sCommand.Instruction = LINEAR_BURST_WRITE;
sCommand.DummyCycles = DUMMY_CLOCK_CYCLES_SRAM_WRITE;
if (HAL_OSPI_Command(&hospi1, &sCommand, HAL_OSPI_TIMEOUT_DEFAULT_VALUE)
!= HAL_OK) {
Error_Handler();
}
/* Memory-mapped mode configuration for Linear burst read operations */
sCommand.OperationType = HAL_OSPI_OPTYPE_READ_CFG;
sCommand.Instruction = LINEAR_BURST_READ;
sCommand.DummyCycles = DUMMY_CLOCK_CYCLES_SRAM_READ;
if (HAL_OSPI_Command(&hospi1, &sCommand, HAL_OSPI_TIMEOUT_DEFAULT_VALUE)
!= HAL_OK) {
Error_Handler();
}
/*Disable timeout counter for memory mapped mode*/
sMemMappedCfg.TimeOutActivation = HAL_OSPI_TIMEOUT_COUNTER_DISABLE;
/*Enable memory mapped mode*/
if (HAL_OSPI_MemoryMapped(&hospi1, &sMemMappedCfg) != HAL_OK) {
Error_Handler();
}
}