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Still struggling with SD card to interface with VisualGDB.
I imported an MBED library called SDBlockDevice
And now I get the error that my MBED version in VisualGDB is not high enough.
#ifdef MBED_MAJOR_VERSION
#if (MBED_VERSION < MBED_ENCODE_VERSION(5,6,1))
#error “Incompatible mbed-os version detected! Required 5.5.4 and above”
#endif
#elseWhat Can I do?
How do I check my version?
How Do I upgrade my version in the project?
One more update:
if I put the line: SDFileSystem sd(PD_4, PD_3, PD_1, PA_1, “sd”);
inside main, I get this run time error and the program stops execution on this line:
Couldn’t create sd in FATFileSystem::FATFileSystem
I got this to compile, however, the SD card still doesn’t work.
the same project from MBED online compiler doesn’t work on VisualGDB.
the “mkdir” command does not invoke the function from fatfilesystem.h., instead it points to stdio.h
What can be done?
the line FILE *fp = fopen(“/sd/123.txt”, “r”);
gives me the error “cannot open file for write”
and program stops execution.
it’s like the compiler doesn’t see the line:
SDFileSystem sd(PD_4, PD_3, PD_1, PA_1, “sd”);
in the declaration.
If I comment it out, it behaves the same (as if I never wrote it)
what can be done?
Hi
I tried the example from the URL, but I still can’t receive any serial data. Transmitting serial data works well.
I am using interrupts.
Here is my code.
#ifdef __cplusplus extern "C" #endif void SysTick_Handler(void) { HAL_IncTick(); HAL_SYSTICK_IRQHandler(); } static UART_HandleTypeDef s_UARTHandle = UART_HandleTypeDef(); void initRS485() { HAL_Init(); __USART3_CLK_ENABLE(); __GPIOC_CLK_ENABLE(); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Pin = GPIO_PIN_10; GPIO_InitStructure.Mode = GPIO_MODE_AF_PP; GPIO_InitStructure.Alternate = GPIO_AF7_USART3; GPIO_InitStructure.Speed = GPIO_SPEED_HIGH; GPIO_InitStructure.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOC, &GPIO_InitStructure); GPIO_InitStructure.Pin = GPIO_PIN_11; GPIO_InitStructure.Mode = GPIO_MODE_AF_OD; HAL_GPIO_Init(GPIOC, &GPIO_InitStructure); s_UARTHandle.Instance = USART3; s_UARTHandle.Init.BaudRate = 115200; s_UARTHandle.Init.WordLength = UART_WORDLENGTH_8B; s_UARTHandle.Init.StopBits = UART_STOPBITS_1; s_UARTHandle.Init.Parity = UART_PARITY_NONE; s_UARTHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE; s_UARTHandle.Init.Mode = UART_MODE_TX_RX; if (HAL_UART_Init(&s_UARTHandle) != HAL_OK) pc.printf("error\r\n"); HAL_NVIC_SetPriority(USART3_IRQn, 0, 0); HAL_NVIC_EnableIRQ(USART3_IRQn); } void USART3_IRQHandler() { HAL_UART_IRQHandler(&s_UARTHandle); } void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { if (huart->Instance == USART3) { // Your buffer is full with your data process it here or set a flag pc.printf("%d",buffer3); } } int main(void) { initRS485(); for (;;) { HAL_UART_Receive_IT(&s_UARTHandle, (uint8_t *)buffer3, sizeof(buffer3)); //some coder here } }
