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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
parents 35f7a1dc9f7d
children
line wrap: on
line source

;********************************************************************************
;*** File           : uart.pdf
;*** Creation       : Wed Mar 11 09:58:54 CST 2009
;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1
;*** Copyright      : (c) Texas Instruments AG, Berlin Germany 2002
;********************************************************************************
;*** Document Type  : Service Access Point Specification
;*** Document Name  : uart
;*** Document No.   : 8441.117.99.014
;*** Document Date  : 2002-03-11
;*** Document Status: BEING_PROCESSED
;*** Document Author: TVO
;********************************************************************************



PRAGMA 	SRC_FILE_TIME 	"Thu Nov 29 09:56:02 2007"
PRAGMA 	LAST_MODIFIED 	"2002-03-11"
PRAGMA 	ID_AND_VERSION 	"8441.117.99.014"



CONST 	UART_DLCI_NOT_MULTIPLEXED 	0 	; 



VALTAB 	VAL_esc_valid
VAL 	0 	UART_IO_ESC_UNDEF 	"values for escape sequence detection remain unchanged"
VAL 	1 	UART_IO_ESC_VALID 	"values for escape sequence detection are valid"

VALTAB 	VAL_xoff
VAL 	19 	UART_IO_XOFF_DEFAULT 	"default value for XOff character"

VALTAB 	VAL_xon
VAL 	17 	UART_IO_XON_DEFAULT 	"default value for XOn character"

VALTAB 	VAL_parity
VAL 	255 	UART_IO_PA_UNDEF 	"parity remain unchanged"
VAL 	0 	UART_IO_PA_NONE 	"no parity and no space"
VAL 	1 	UART_IO_PA_EVEN 	"even parity"
VAL 	2 	UART_IO_PA_ODD 	"odd parity"
VAL 	3 	UART_IO_PA_SPACE 	"no parity but space"

VALTAB 	VAL_flow_tx
VAL 	255 	UART_IO_FC_TX_UNDEF 	"TX flow control mode remain unchanged"
VAL 	0 	UART_IO_FC_TX_NONE 	"no TX flow control"
VAL 	1 	UART_IO_FC_TX_RTS 	"RTS/CTS flow control"
VAL 	2 	UART_IO_FC_TX_XOFF 	"XON/XOFF flow control"

VALTAB 	VAL_esc_char
VAL 	43 	UART_IO_ESC_CHAR_DEFAULT 	"default value for escape character ('+')"

VALTAB 	VAL_flow_rx
VAL 	255 	UART_IO_FC_RX_UNDEF 	"RX flow control mode remain unchanged"
VAL 	0 	UART_IO_FC_RX_NONE 	"no RX flow control"
VAL 	1 	UART_IO_FC_RX_RTS 	"RTS/CTS flow control"
VAL 	2 	UART_IO_FC_RX_XOFF 	"XON/XOFF flow control"

VALTAB 	VAL_nsb
VAL 	255 	UART_IO_SB_UNDEF 	"stop bits remain unchanged"
VAL 	1 	UART_IO_SB_1 	"one stop bit"
VAL 	2 	UART_IO_SB_2 	"two stop bits"

VALTAB 	VAL_speed
VAL 	255 	UART_IO_SPEED_UNDEF 	"baud rate remain unchanged"
VAL 	0 	UART_IO_SPEED_AUTO 	"auto detection of baud rate"
VAL 	1 	UART_IO_SPEED_75 	"baud rate of 75 bits per second"
VAL 	2 	UART_IO_SPEED_150 	"baud rate of 150 bits per second"
VAL 	3 	UART_IO_SPEED_300 	"baud rate of 300 bits per second"
VAL 	4 	UART_IO_SPEED_600 	"baud rate of 600 bits per second"
VAL 	5 	UART_IO_SPEED_1200 	"baud rate of 1200 bits per second"
VAL 	6 	UART_IO_SPEED_2400 	"baud rate of 2400 bits per second"
VAL 	7 	UART_IO_SPEED_4800 	"baud rate of 4800 bits per second"
VAL 	8 	UART_IO_SPEED_7200 	"baud rate of 7200 bits per second"
VAL 	9 	UART_IO_SPEED_9600 	"baud rate of 9600 bits per second"
VAL 	10 	UART_IO_SPEED_14400 	"baud rate of 14400 bits per second"
VAL 	11 	UART_IO_SPEED_19200 	"baud rate of 19200 bits per second"
VAL 	12 	UART_IO_SPEED_28800 	"baud rate of 28800 bits per second"
VAL 	13 	UART_IO_SPEED_33900 	"baud rate of 33900 bits per second"
VAL 	14 	UART_IO_SPEED_38400 	"baud rate of 38400 bits per second"
VAL 	15 	UART_IO_SPEED_57600 	"baud rate of 57600 bits per second"
VAL 	16 	UART_IO_SPEED_115200 	"baud rate of 115200 bits per second"
VAL 	17 	UART_IO_SPEED_203125 	"baud rate of 203125 bits per second"
VAL 	18 	UART_IO_SPEED_406250 	"baud rate of 406250 bits per second"
VAL 	19 	UART_IO_SPEED_812500 	"baud rate of 812500 bits per second"

VALTAB 	VAL_esc_gp
VAL 	1000 	UART_IO_ESC_GP_DEFAULT 	"default value for guard period (1000 ms)"
VAL 	0 	UART_IO_ESC_OFF 	"no escape sequence detection"

VALTAB 	VAL_xoff_valid
VAL 	0 	UART_IO_XOFF_UNDEF 	"XOff character remain unchanged"
VAL 	1 	UART_IO_XOFF_VALID 	"XOff character valid"

VALTAB 	VAL_xon_valid
VAL 	0 	UART_IO_XON_UNDEF 	"XOn character remain unchanged"
VAL 	1 	UART_IO_XON_VALID 	"XOn character valid"

VALTAB 	VAL_bpc
VAL 	255 	UART_IO_BPC_UNDEF 	"bits per character remain unchanged"
VAL 	7 	UART_IO_BPC_7 	"7 bits per character"
VAL 	8 	UART_IO_BPC_8 	"8 bits per character"

VALTAB 	VAL_dti_conn
VAL 	0 	UART_CONNECT_DTI 	"Connect DTI to UART"
VAL 	1 	UART_DISCONNECT_DTI 	"Disconnect DTI from UART"

VALTAB 	VAL_line_state
VAL 	0 	UART_LINE_ON 	"activate line"
VAL 	1 	UART_LINE_OFF 	"deactivate line"

VALTAB 	VAL_detection
VAL 	0 	UART_ESC_DETECTION_OFF 	"turn off escape sequence detection"
VAL 	1 	UART_ESC_DETECTION_ON 	"turn on escape sequence detection"

VALTAB 	VAL_cause
VAL 	1 	UART_DETECT_ESC 	"escape sequence detected"
VAL 	2 	UART_DETECT_DTR 	"DTR line of serial link drops"

VALTAB 	VAL_error
VAL 	8 	UART_ERROR_NO_CHANNEL 	"can not open VSI communication channel"
VAL 	9 	UART_ERROR_MUX_ESTABLISH_FAIL 	"establishment of multiplexer operation fails"
VAL 	10 	UART_ERROR_MUX_NO_RESPONSE 	"no response from TE multiplexer"

VALTAB 	VAL_mode
VAL 	0 	UART_MUX_MODE_BASIC 	"basic option"
VAL 	1 	UART_MUX_MODE_ADVANCED 	"advanced option"

VALTAB 	VAL_frame_type
VAL 	0 	UART_MUX_FRAME_UIH 	"UIH frames used only"
VAL 	1 	UART_MUX_FRAME_UI 	"UI frames used only"
VAL 	2 	UART_MUX_FRAME_I 	"I frames used only"
VAL 	0 	UART_MUX_FRAME_DEFAULT 	"default value"

VALTAB 	VAL_n1
VAL 	31 	UART_MUX_N1_BASIC_DEFAULT 	"default value for the basic option"
VAL 	64 	UART_MUX_N1_ADVANCED_DEFAULT 	"default value for the advanced option"

VALTAB 	VAL_t1
VAL 	10 	UART_MUX_T1_DEFAULT 	"default value (100 ms)"

VALTAB 	VAL_n2
VAL 	3 	UART_MUX_N2_DEFAULT 	"default value"

VALTAB 	VAL_t2
VAL 	30 	UART_MUX_T2_DEFAULT 	"default value (300 ms)"

VALTAB 	VAL_t3
VAL 	10 	UART_MUX_T3_DEFAULT 	"default value (10 seconds)"

VALTAB 	VAL_convergence
VAL 	1 	UART_MUX_CONVERGENCE_UOS 	"unstructed octet stream"
VAL 	2 	UART_MUX_CONVERGENCE_UOSV24 	"unstructed octet stream with transmission of V.24 signal states"
VAL 	3 	UART_MUX_CONVERGENCE_UFD 	"uninterruptible framed data"
VAL 	4 	UART_MUX_CONVERGENCE_IFD 	"interruptible framed data"
VAL 	1 	UART_MUX_CONVERGENCE_DEFAULT 	"default value"

VALTAB 	VAL_service
VAL 	0 	UART_MUX_SERVICE_AT 	"AT command mode"
VAL 	1 	UART_MUX_SERVICE_DATA 	"data service"
VAL 	2 	UART_MUX_SERVICE_VOICE_0621 	"voice service (coded - GSM 06.21)"
VAL 	3 	UART_MUX_SERVICE_VOICE_PCM64U 	"voice service (coded - PCM 64 kbits/s U-law)"
VAL 	4 	UART_MUX_SERVICE_VOICE_ADPCM 	"voice service (coded - ADPCM 32 kbits/s)"
VAL 	5 	UART_MUX_SERVICE_VOICE_PCM64A 	"voice service (coded - PCM 64 kbits/s A-law)"
VAL 	6 	UART_MUX_SERVICE_VOICE_PCM128 	"voice service (coded - PCM 128 kbits/s)"
VAL 	7 	UART_MUX_SERVICE_GPRS 	"GPRS data"
VAL 	8 	UART_MUX_SERVICE_CS 	"Circuit-Switched data"
VAL 	9 	UART_MUX_SERVICE_TRACE 	"Trace / Debug output"
VAL 	0 	UART_MUX_SERVICE_DEFAULT 	"default value"




VAR 	device 	"device number" 	B


VAR 	dlci 	"data link connection identifier" 	B


VAR 	speed 	"baud rate" 	B

VAL 	@p_uart - VAL_speed@ 	

VAR 	bpc 	"bits per character" 	B

VAL 	@p_uart - VAL_bpc@ 	

VAR 	nsb 	"stop bits" 	B

VAL 	@p_uart - VAL_nsb@ 	

VAR 	parity 	"parity of serial link" 	B

VAL 	@p_uart - VAL_parity@ 	

VAR 	flow_rx 	"flow control mode RX" 	B

VAL 	@p_uart - VAL_flow_rx@ 	

VAR 	flow_tx 	"flow control mode TX" 	B

VAL 	@p_uart - VAL_flow_tx@ 	

VAR 	xon_valid 	"indicator whether xon is valid" 	B

VAL 	@p_uart - VAL_xon_valid@ 	

VAR 	xon 	"XOn character for XON/XOFF flow control" 	B

VAL 	@p_uart - VAL_xon@ 	

VAR 	xoff_valid 	"indicator whether xoff is valid" 	B

VAL 	@p_uart - VAL_xoff_valid@ 	

VAR 	xoff 	"XOff character for XON/XOFF flow control" 	B

VAL 	@p_uart - VAL_xoff@ 	

VAR 	esc_valid 	"indicator whether esc_char and esc_gp are valid" 	B

VAL 	@p_uart - VAL_esc_valid@ 	

VAR 	esc_char 	"escape character" 	B

VAL 	@p_uart - VAL_esc_char@ 	

VAR 	esc_gp 	"guard period" 	S

VAL 	@p_uart - VAL_esc_gp@ 	

VAR 	dti_conn 	"DTI connect" 	B

VAL 	@p_uart - VAL_dti_conn@ 	

VAR 	direction 	"direction of the DTI link" 	B


VAR 	link_id 	"identifier of DTI connection" 	L


VAR 	entity_name 	"communication entity name" 	L


VAR 	uart_instances 	"number of UART instances" 	B


VAR 	line_state 	"state of line" 	B

VAL 	@p_uart - VAL_line_state@ 	

VAR 	detection 	"escape sequence detection" 	B

VAL 	@p_uart - VAL_detection@ 	

VAR 	cause 	"cause of indication" 	B

VAL 	@p_uart - VAL_cause@ 	

VAR 	error 	"error code" 	B

VAL 	@p_uart - VAL_error@ 	

VAR 	mode 	"transparency mechanism" 	B

VAL 	@p_uart - VAL_mode@ 	

VAR 	frame_type 	"type of frame" 	B

VAL 	@p_uart - VAL_frame_type@ 	

VAR 	n1 	"maximum frame size" 	S

VAL 	@p_uart - VAL_n1@ 	

VAR 	t1 	"acknowledgement timer" 	B

VAL 	@p_uart - VAL_t1@ 	

VAR 	n2 	"maximum numer of retransmissions" 	B

VAL 	@p_uart - VAL_n2@ 	

VAR 	t2 	"response timer for the multiplexer control channel" 	B

VAL 	@p_uart - VAL_t2@ 	

VAR 	t3 	"wake up response timer" 	B

VAL 	@p_uart - VAL_t3@ 	

VAR 	convergence 	"convergence layer" 	B

VAL 	@p_uart - VAL_convergence@ 	

VAR 	service 	"service on DLC" 	B

VAL 	@p_uart - VAL_service@ 	

VAR 	devId 	"device ID" 	L





COMP 	comPar 	 "Parameters of serial link"
{
 	speed 	 ; baud rate
 	bpc 	 ; bits per character
 	nsb 	 ; stop bits
 	parity 	 ; parity of serial link
 	flow_rx 	 ; flow control mode RX
 	flow_tx 	 ; flow control mode TX
 	xon_valid 	 ; indicator whether xon is valid
 	xon 	 ; XOn character for XON/XOFF flow control
 	xoff_valid 	 ; indicator whether xoff is valid
 	xoff 	 ; XOff character for XON/XOFF flow control
 	esc_valid 	 ; indicator whether esc_char and esc_gp are valid
 	esc_char 	 ; escape character
 	esc_gp 	 ; guard period
}






; UART_PARAMETERS_REQ 	0x7400
; UART_PARAMETERS_CNF 	0x3400
; UART_PARAMETERS_IND 	0x3401
; UART_DTI_REQ 	0x7401
; UART_DTI_CNF 	0x3402
; UART_DTI_IND 	0x3403
; UART_DISABLE_REQ 	0x7402
; UART_DISABLE_CNF 	0x3404
; UART_RING_REQ 	0x7403
; UART_RING_CNF 	0x3405
; UART_DCD_REQ 	0x7404
; UART_DCD_CNF 	0x3406
; UART_ESCAPE_REQ 	0x7405
; UART_ESCAPE_CNF 	0x3407
; UART_DETECTED_IND 	0x3408
; UART_ERROR_IND 	0x3409
; UART_MUX_START_REQ 	0x7406
; UART_MUX_START_CNF 	0x340A
; UART_MUX_DLC_ESTABLISH_IND 	0x340B
; UART_MUX_DLC_ESTABLISH_RES 	0x7407
; UART_MUX_DLC_RELEASE_REQ 	0x7408
; UART_MUX_DLC_RELEASE_IND 	0x340C
; UART_MUX_SLEEP_REQ 	0x7409
; UART_MUX_SLEEP_IND 	0x340D
; UART_MUX_WAKEUP_REQ 	0x740A
; UART_MUX_WAKEUP_IND 	0x340E
; UART_MUX_CLOSE_REQ 	0x740B
; UART_MUX_CLOSE_IND 	0x340F
; UART_DRIVER_SENT_IND 	0x740C
; UART_DRIVER_RECEIVED_IND 	0x740D
; UART_DRIVER_FLUSHED_IND 	0x740E
; UART_DRIVER_CONNECT_IND 	0x740F
; UART_DRIVER_DISCONNECT_IND 	0x7410
; UART_DRIVER_CLEAR_IND 	0x7411



PRIM 	UART_PARAMETERS_REQ 	0x7400
{
 	device 	 ; device number
 	comPar 	 ; Parameters of serial link
}






PRIM 	UART_PARAMETERS_CNF 	0x3400
{
 	device 	 ; device number
}






PRIM 	UART_PARAMETERS_IND 	0x3401
{
 	uart_instances 	 ; number of UART instances
}






PRIM 	UART_DTI_REQ 	0x7401
{
 	dti_conn 	 ; DTI connect
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	direction 	 ; direction of the DTI link
 	link_id 	 ; identifier of DTI connection
 	entity_name 	 ; communication entity name
}






PRIM 	UART_DTI_CNF 	0x3402
{
 	dti_conn 	 ; DTI connect
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
}






PRIM 	UART_DTI_IND 	0x3403
{
 	dti_conn 	 ; DTI connect
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
}






PRIM 	UART_DISABLE_REQ 	0x7402
{
 	device 	 ; device number
}






PRIM 	UART_DISABLE_CNF 	0x3404
{
 	device 	 ; device number
}






PRIM 	UART_RING_REQ 	0x7403
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	line_state 	 ; states of line
}






PRIM 	UART_RING_CNF 	0x3405
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
}






PRIM 	UART_DCD_REQ 	0x7404
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	line_state 	 ; states of line
}






PRIM 	UART_DCD_CNF 	0x3406
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
}






PRIM 	UART_ESCAPE_REQ 	0x7405
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	detection 	 ; escape sequence detection
}






PRIM 	UART_ESCAPE_CNF 	0x3407
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
}






PRIM 	UART_DETECTED_IND 	0x3408
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	cause 	 ; cause of indication
}






PRIM 	UART_ERROR_IND 	0x3409
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	error 	 ; error code
}






PRIM 	UART_MUX_START_REQ 	0x7406
{
 	device 	 ; device number
 	mode 	 ; transparency mechanism
 	frame_type 	 ; type of frame
 	n1 	 ; maximum frame size
 	t1 	 ; acknowledgement timer
 	n2 	 ; maximum numer of retransmissions
 	t2 	 ; response timer for the multiplexer control channel
 	t3 	 ; wake up response timer
}






PRIM 	UART_MUX_START_CNF 	0x340A
{
 	device 	 ; device number
}






PRIM 	UART_MUX_DLC_ESTABLISH_IND 	0x340B
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	convergence 	 ; convergence layer
 	n1 	 ; maximum frame size
 	service 	 ; service on DLC
}






PRIM 	UART_MUX_DLC_ESTABLISH_RES 	0x7407
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
 	n1 	 ; maximum frame size
}






PRIM 	UART_MUX_DLC_RELEASE_REQ 	0x7408
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
}






PRIM 	UART_MUX_DLC_RELEASE_IND 	0x340C
{
 	device 	 ; device number
 	dlci 	 ; data link connection identifier
}






PRIM 	UART_MUX_SLEEP_REQ 	0x7409
{
 	device 	 ; device number
}






PRIM 	UART_MUX_SLEEP_IND 	0x340D
{
 	device 	 ; device number
}






PRIM 	UART_MUX_WAKEUP_REQ 	0x740A
{
 	device 	 ; device number
}






PRIM 	UART_MUX_WAKEUP_IND 	0x340E
{
 	device 	 ; device number
}






PRIM 	UART_MUX_CLOSE_REQ 	0x740B
{
 	device 	 ; device number
}






PRIM 	UART_MUX_CLOSE_IND 	0x340F
{
 	device 	 ; device number
}






PRIM 	UART_DRIVER_SENT_IND 	0x740C
{
 	devId 	 ; Primitive Item
}






PRIM 	UART_DRIVER_RECEIVED_IND 	0x740D
{
 	devId 	 ; Primitive Item
}






PRIM 	UART_DRIVER_FLUSHED_IND 	0x740E
{
 	devId 	 ; Primitive Item
}






PRIM 	UART_DRIVER_CONNECT_IND 	0x740F
{
 	devId 	 ; Primitive Item
}






PRIM 	UART_DRIVER_DISCONNECT_IND 	0x7410
{
 	devId 	 ; Primitive Item
}






PRIM 	UART_DRIVER_CLEAR_IND 	0x7411
{
 	devId 	 ; Primitive Item
}