FreeCalypso > hg > fc-tourmaline
view src/g23m-aci/uart/uart_kers.h @ 268:f2e52cab0a73
abb_inth.c: check all interrupt causes, not just one
The original code used if - else if - else if etc constructs, thus
the first detected interrupt was the only one handled. However,
Iota ITSTATREG is a clear-on-read register, thus if we only handle
the first detected interrupt and skip checking the others, then the
other interrupts will be lost, if more than one interrupt happened
to occur in one ABB interrupt handling cycle - a form of rare race
condition. Change the code to check all interrupts that were read
in this cycle.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 13 Jun 2021 18:17:53 +0000 (2021-06-13) |
parents | fa8dc04885d8 |
children |
line wrap: on
line source
/* +----------------------------------------------------------------------------- | Project : | Modul : +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : Definitions for uart_kers.c +----------------------------------------------------------------------------- */ #ifndef UART_KERS_H #define UART_KERS_H EXTERN void sig_drx_ker_line_states_ind(UBYTE dlc_instance, UBYTE st_flow, UBYTE st_line_sa, UBYTE st_line_sb, USHORT st_break_len); EXTERN void sig_dtx_ker_enable_ind(UBYTE dlc_instance); EXTERN void sig_dtx_ker_disable_ind(UBYTE dlc_instance); EXTERN void sig_dtx_ker_escape_detected_ind(U8 dlc_instance); EXTERN void sig_any_ker_flushed_ind(UBYTE dlc_instance); EXTERN void sig_tx_ker_flushed_ind(void); EXTERN void sig_tx_ker_sending_ind (void); EXTERN void sig_tx_ker_data_sent_ind (T_desc2* rest_data, USHORT write_pos); EXTERN void sig_rx_ker_receiving_ind (void); EXTERN void sig_rx_ker_data_received_ind (T_desc2* received_data, USHORT write_pos); EXTERN void sig_rx_ker_line_states_ind (ULONG line_states); EXTERN void sig_rt_ker_timeout_t1_ind (void); EXTERN void sig_rt_ker_timeout_t2_ind (void); EXTERN void sig_rt_ker_timeout_t3_ind (void); EXTERN void sig_rt_ker_timeout_tesd_ind (void); EXTERN void sig_dti_ker_connection_closed_ind (U8 dlc_instance); #endif /* !UART_KERS_H */