Hello,
I'm working on a project with nrf9160. i have develop my code to send frame in LTE.
It's works great during less than 1 hour and after i receive a printk message that said : "structure memory allocation error"
To send my frame, i use 2 memory allocation that i free when i call my work handler.
I have disable the part which use my send frame and the issue don't appear.
For the moment i don't have found any clue that allow me to explain this problem, maybe i miss something.
Could give me an advice about this ?
uint8_t send_frame(uint8_t *data_buffer, uint8_t data_len, uint8_t message_type){
// Allocate memory for the work item data
struct comm_item_data *work_data = k_malloc(sizeof(struct comm_item_data));
if (!work_data) {
printk("structure memory allocation error\n");
// Handle memory allocation failure of structure
return(1);
}
work_data->data_buffer = k_malloc(data_len);
if (!work_data->data_buffer) {
printk("data memory allocation error\n");
// Handle memory allocation failure of data buffer
return(1);
}
// Initialize the work item
k_work_init(&work_data->work, comm_work_handler);
memcpy(work_data->data_buffer, data_buffer, data_len);
work_data->data_len = data_len;
work_data->message_type = message_type;
k_work_submit_to_queue(&comm_workqueue, &work_data->work);
return(0);
}
void comm_work_handler(struct k_work *work) {
uint8_t encoded_buffer[MAX_ENC_FRAME_LEN];
uint8_t enc_buff_len;
uint8_t ret = false;
struct comm_item_data *work_data = CONTAINER_OF(work, struct comm_item_data, work);
printk("start comm work\n");
if(device_info.modem_state == 0 ){
printk("Turn modem on\n");
lte_lc_normal();
}
//Wait for the LTE link UP
k_sem_take(<e_connected, K_FOREVER);
printk("Send frame type %s : ", work_data->message_type == MESSAGE_TYPE_OOB ? "OOB":"STD");
print_bin(work_data->data_buffer, work_data->data_len, 0);
//encode and crypt the message
enc_buff_len = encode_frame(encoded_buffer, work_data->data_buffer, work_data->data_len, work_data->message_type);
if(enc_buff_len > 0){
switch( send_data_udp(encoded_buffer, enc_buff_len) ){
case 0:
ret = true;
default:
ret = false;
}
}
if(work_data->message_type == MESSAGE_TYPE_STD){
send_uart_data_char(ret == 0 ?"+SEND OK\r\n":"+SEND ERROR\r\n");
}
printk("send data ret %d\n",ret);
k_free(work_data->data_buffer);
k_free(work_data);
k_sem_give(<e_connected);
printk("psm state %d\n", device_info.psm_state);
if(device_info.modem_state == 1 && device_info.psm_state == 0){
printk("Turn modem off\n");
lte_lc_offline();
device_info.modem_state = 0;
}
}
//In my file.h
struct comm_item_data {
struct k_work work;
uint8_t *data_buffer;
uint8_t data_len;
uint8_t message_type;
};
best regards,
Lam
