zephyr
/
nrf_hw_models
mirror of https://github.com/zephyrproject-rtos/nrf_hw_models.git
1
0
Fork 0
Code Issues Releases Wiki Activity

UART(E): Detect receiver opening mid frame 

* Detect the receiver being open mid frame, and warn about it

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
This commit is contained in:
Alberto Escolar Piedras 2024-01-09 15:03:58 +01:00
parent c744f2c762
commit b39e4489f5
3 changed files with 18 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/HW_models/NHW_UART.c
View File

@ -454,20 +454,31 @@ static void notify_backend_TxOnOff(uint inst, struct uarte_status *u_el, bool On
/**
* Process a byte incoming to the UART from a backend
* This call should be done in the last micros when the byte frame is finishing in the line
*/
void nhw_UARTE_digest_Rx_byte(uint inst, uint8_t byte) {
struct uarte_status *u_el = &nhw_uarte_st[inst];
bs_time_t frame_start, now;
if (u_el->rx_status == Rx_Off) {
bs_trace_warning_time_line("Byte received while UART%i is not enabled for Rx, ignoring it\n", inst);
return;
}
now = nsi_hws_get_time();
frame_start = now - nhw_uarte_one_byte_time(inst) + 1;
if (u_el->Last_Rx_off_time >= frame_start) {
bs_trace_warning_time_line("Byte partially received while UART%i was not enabled for Rx, "
"this would have likely caused a framing error. Ignoring it in the model\n", inst);
return;
}
if (u_el->trx_callbacks[1]) {
u_el->trx_callbacks[1](inst, &byte);
}
if (u_el->Rx_log_file) {
fprintf(u_el->Rx_log_file, "%"PRItime",0x%02X\n", nsi_hws_get_time(), byte);
fprintf(u_el->Rx_log_file, "%"PRItime",0x%02X\n", now, byte);
}
Rx_FIFO_push(inst, u_el, byte);
@ -577,6 +588,9 @@ void nhw_UARTE_TASK_STARTRX(int inst)
return;
}
if (u_el->rx_status == Rx_Off) {
u_el->Last_Rx_off_time = nsi_hws_get_time();
}
u_el->rx_status = Rx_On;
notify_backend_RxOnOff(inst, u_el, true);

1
src/HW_models/NHW_UART_backend_fifo.c
View File

@ -473,7 +473,6 @@ static void uf_Rx_handle_old_input(uint inst, struct ufifo_st_t *u_el) {
}
} while (true);
//TOLOW: Check for Tx byte *started* in the past and disregard too (by setting header as NOP)
uf_rx_process_last_msg_pre(inst, u_el);
}

3
src/HW_models/NHW_UART_private.h
View File

@ -42,6 +42,9 @@ struct uarte_status {
enum uart_tx_status tx_status;
enum uart_rx_status rx_status;
/* When was the last time the receiver was off (only valid if the receiver is currently On */
bs_time_t Last_Rx_off_time;
uint8_t Rx_FIFO[RX_FIFO_SIZE];
int Rx_FIFO_cnt;