Dear ST Community,
I'm trying to integrate my ST Edge AI model C code (generated from ST Edge AI Cloud) to my current application.
- Part Number: STM32F411CE6
- Environment: STM32CubeMX: 6.17; ST Edge AI Core v4.0.0-20500 359356bb0
- Detail of my issue:
At line 63 below: huart2.Instance = 0x40004400
After successfully execute stat_network_run() (line 65): huart2.Instance = 0x582cc4de -> This causes Bus Fault to be triggered in line 70.
My main function:
void print_to_uart(UART_HandleTypeDef *huart, const char *format, ...) {
char buffer[256];
int cx;
va_list args;
va_start(args, format);
cx = vsnprintf(buffer, sizeof(buffer), format, args);
va_end(args);
if (cx >= 0 && cx < (int)(sizeof(buffer))) {
HAL_UART_Transmit(huart, (uint8_t*) buffer, cx, 1000);
}
}
//...
STAI_ALIGNED(STAI_NETWORK_CONTEXT_ALIGNMENT)
static stai_network network_context[STAI_NETWORK_CONTEXT_SIZE] = {0};
/* Global c-array to handle the activations buffer */
STAI_ALIGNED(STAI_NETWORK_ACTIVATION_1_ALIGNMENT)
static uint8_t activations[STAI_NETWORK_ACTIVATION_1_SIZE_BYTES];
/* Array to store the data of the input tensor */
STAI_ALIGNED(STAI_NETWORK_IN_1_ALIGNMENT)
static int16_t in_data[STAI_NETWORK_IN_1_HEIGHT][STAI_NETWORK_IN_1_CHANNEL];
/* c-array to store the data of the output tensor */
STAI_ALIGNED(STAI_NETWORK_OUT_1_ALIGNMENT)
static int8_t out_data[STAI_NETWORK_OUT_1_SIZE];
/* Array of pointer to manage the model's input/output tensors */
static stai_ptr stai_input[STAI_NETWORK_IN_NUM];
static stai_ptr stai_output[STAI_NETWORK_OUT_NUM];
/* Simple rounding helper */
static inline int32_t stai_roundf(float v) {
return (int32_t)(v + (v >= 0.0f ? 0.5f : -0.5f));
}
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USART2_UART_Init();
print_to_uart(&huart2, "\r\n-- Application started --\r\n");
stai_return_code ret;
/* 1. Init library */
/* Init runtime */
ret = stai_runtime_init();
if (ret != STAI_SUCCESS) {};
/* Init network context */
ret = stai_network_init(network_context);
if (ret != STAI_SUCCESS) {};
/* Mapping activation buffer */
const stai_ptr acts[] = {activations}; // acts[0] points to activations[0]
ret = stai_network_set_activations(network_context, acts, STAI_NETWORK_ACTIVATIONS_NUM); // set activation buffer addr to context
if (ret != STAI_SUCCESS) {};
/* Quantize the input from float to int16 */
/* q = round(x / scale) + zero_point */
for (int i = 0; i < STAI_NETWORK_IN_1_HEIGHT; i++) {
for (int j = 0; j < STAI_NETWORK_IN_1_CHANNEL; j++) {
in_data[i][j] = (int16_t) 0;
}
}
/* 2. Inference */
/* Set network input/output buffers */
const stai_ptr inputs_ptr[] = { (stai_ptr)&in_data[0][0] };
ret = stai_network_set_inputs(network_context, inputs_ptr, STAI_NETWORK_IN_NUM);
if (ret != STAI_SUCCESS) {};
const stai_ptr outputs_ptr[] = { (stai_ptr)out_data };
ret = stai_network_set_outputs(network_context, outputs_ptr, STAI_NETWORK_OUT_NUM);
if (ret != STAI_SUCCESS) {};
print_to_uart(&huart2, "Before inference\r\n");
/* Perform the inference. The issue is happeninng here */
ret = stai_network_run(network_context, STAI_MODE_SYNC);
if (ret != STAI_SUCCESS) {
ret = stai_network_get_error(network_context);
print_to_uart(&huart2, "Error\r\n");
};
print_to_uart(&huart2, "Perform inference DONE\r\n");
- Occurence: Every time
Can you please let me know any debugging suggestion in this case?
Thank you very much for your help.
--
Ps: I tried increased _Min_Stack_Size in the linker script, however, it looks like the problem didn't come from stack size.
