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I-9048/I-8048W Linux API Reference, v 1.0.2                                E-mail: [email protected]   

39 

3.11.

 

I8048W_Read_FallingEventCount 

This function read total count values of the rising interrupt occurred on an I-8048W / I-9048 channel. 

Syntax 

【

C

】

 

DWORD I8048W_Read_FallingEventCount( 

int

 slot,   

int 

channel   

); 

Parameters 

slot 

[in] Specifies the slot number (1 - 8).   

channel 

[in] Specifies the channel number ( 0 to 7).   

Return Value 

 
 

falling interrupt count value 

 

 
 
 
 
 
 
 
 
 
 
 

Содержание I-9K Series

Страница 1: ...I 9048 I 8048W Module Linux API Reference For Linux platform V 1 0 2 April 2021 Written by Sean Hsu Edited by Cindy Huang...

Страница 2: ...he information furnished by ICP DAS is believed to be accurate and reliable However no responsibility is assumed by ICP DAS for its use nor for any infringements of patents or other rights of third pa...

Страница 3: ...s 20 2 1 6 Programmable Rising Falling interrupt 21 2 2 Software Introduction 23 2 2 1 Software flow chart 24 2 2 2 Recognize different interrupt service requests 26 3 API References 28 3 1 Function L...

Страница 4: ...3 15 I8048W_InstallISR 43 3 16 I8048W_UnInstallISR 45 3 17 I8048W_UnFreezeINT 46 3 18 I8048W_GetLibVersion 47 Revision History 48...

Страница 5: ...channel status together with 4 kV ESD protection and 1500 Vrms intra module isolation The information contained in this manual is divided into the following topics Chapter 1 Introduction This chapter...

Страница 6: ..._I 97K__Series for more details regarding of I 9K series module specification jumper settings details and wiring information Refer to http www icpdas com en product guide Remote__I_O__Module__and__Uni...

Страница 7: ...1 1 I O Module Dimensions All dimensions are in millimeters I 9K module with spring clamp terminal connector Left Side View Top View I 8K module with screw terminals connector...

Страница 8: ...ection The metal part of the cord end terminal on the wire can be direct wired to the terminal Note The I 9048 module supports spring clamp terminal connector The spring clamp terminal connector for t...

Страница 9: ...o remove the wiring from the connector 1 Use screwdriver to push the orange clip in 2 Insert the wiring into the terminal block 1 Keep on pushing Insert the wire 1 Use screwdriver to push the orange c...

Страница 10: ...1 3 Wire Connections...

Страница 11: ...controller and PC has been connected well and then check the I 8048W I 9048 has been plugged in the controller 3 Next check the communication between controller and PC is fine and download the demo pr...

Страница 12: ...an be programmed as an interrupt input channel to invoke an interrupt on falling edges rising edges or both falling and rising edges Each channel can be eithers Isolated or Non isolated TTL Input sele...

Страница 13: ...I Digital Input Channels 8 Type Dry Contact Wet Contact Sink Source NPN PNP Sink Source Wet Contact ON Voltage Level Isolated 4 30 VDC Non Isolated 0 0 8 VDC Wet Contact OFF Voltage Level Isolated 0 1...

Страница 14: ...nt for the I 9048 The pin assignment for the I 9048 is shown as follows Pin 1 and 11 TTL GND ground for non isolated inputsignals Pins 2 9 12 19 8 channel digital input Pins 10 and 20 Isolated power s...

Страница 15: ...ignment for the I 8048W The pin assignment for the I 8048W is shown as follows Pin 1 TTL GND ground for non isolated inputsignals Pins 3 18 8 channel digital input Pins 19 and 20 Isolated power supply...

Страница 16: ...2 1 3 Block Diagram The signal flow block diagram for I 9048 is shown as follows...

Страница 17: ...The signal flow block diagram for I 8048W is shown as follows...

Страница 18: ...s Isolated input TTL input Isolated input default TTL input JP1 for ch0 JP2 for ch1 JP3 for ch2 JP4 for ch3 JP5 for ch4 JP6 for ch5 JP7 for ch6 JP8 for ch7 JP1 JP8 in the DOWN position will select the...

Страница 19: ...l can be either isolated or TTL input for I 8048W as follows Isolated input TTL input Isolated input default TTL input JP1 for ch0 JP2 for ch1 JP3 for ch2 JP4 for ch3 JP5 for ch4 JP6 for ch5 JP7 for c...

Страница 20: ...tion are listed as follows Isolated TTL Input status Digital Input Logic level Electric signal LED OPEN 1 Low OFF 0 0 8V 0 Low ON 2 5V 1 High OFF Input status Digital Input Logic level Electric signal...

Страница 21: ...be programmed as one of the following types individually Rising edge interrupt input Falling edge interrupt input Rising edge and Falling edge interrupt input The Interrupt trigger types are as follo...

Страница 22: ...at condition the interrupt service thread cannot identify which interrupt source is active So the interrupt signal must be hold long enough until the interrupt service thread is executed This holding...

Страница 23: ...uction Users can follow the sections to understand the usage of I 9048 I 8048W Library software We offer multi functions in the I 9048 I 8048W library and users can use these functions to develop I 90...

Страница 24: ...t Service Thread IST Enable falling edge or rising edge Initialize I 9048 ISR Event 2 2 1 Software flow chart Initialize I 9048 Gives all internal variables an initial value Any interrupt signal clear...

Страница 25: ...e ISR and then the IST performs necessary operations collect the data and process them When the interrupt processing is completed the IST informs the kernel to re enable the hardware interrupt The fun...

Страница 26: ...2 2 2 Recognize different interrupt service requests I 9048 I 8048W is an 8 channels rising falling edge programmable interrupt module It can plug into slot of the PAC controllers The section introduc...

Страница 27: ...of the CPU shown in section 1 3 So their ISTs are different CPU executes different ISR when the request is from different slot Considering when the interrupts occur the situations can be divided to tw...

Страница 28: ...i8048 h header file or the API functions described in the following sections for more detailed information The following is an overview of the functions provided in the LinPAC library libi8k a Detaile...

Страница 29: ...interrupt status from the I 9048 modules I8048W_ Read_FallingEvent This function read falling interrupt status from the I 9048 modules I8048W_ Read_RisingEventCount This function read total count val...

Страница 30: ...eters iSlot in Specifies the slot number 1 8 Return Value Return the full channel DI value Example C int byteData slotNumber 0 byteData I8048W_DI_ALL slotNumber Remarks Isolated TTL JPn selected isola...

Страница 31: ...le channel DI status of the I 8048W I 9048 module Syntax C int I8048W_DI_Ch int slot int DI_Channel Parameters slot in Specifies the slot number 1 8 DI_Channel in The single channel of the I 9048 modu...

Страница 32: ...is used to Enable Disable the Rising interrupt of an I 8048W I 9048 channel Syntax C void I8048W_Set_RisingReg int slot int channel int enable Parameters slot in Specifies the slot number 1 8 channel...

Страница 33: ...is used to Enable Disable the Falling interrupt of an I 8048W I 9048 channel Syntax C void I8048W_Set_FallingReg int slot int channel int enable Parameters slot in Specifies the slot number 1 8 channe...

Страница 34: ...singReg This function Read the rising interrupt setting status of an I 8048W I 9048 channel Syntax C int I8048W_Read_RisingReg int slot int channel Parameters slot in Specifies the slot number 1 8 cha...

Страница 35: ...ead_FallingReg This function Read the falling interrupt setting status of an I 8048W I 9048 channel Syntax C int I8048W_Read_FallingReg int slot int channel Parameters slot in specifies the slot numbe...

Страница 36: ...nt This function read rising interrupt status from the I 8048W I 9048 modules Syntax C int I8048W_Read_RisingEvent int slot int channel Parameters slot in specifies the slot number 1 8 channel in Spec...

Страница 37: ...This function read falling interrupt status from the I 8048W I 9048 modules Syntax C int _I8048W_Read_FallingEvent int slot int channel Parameters slot in Specifies the slot number 1 8 channel in Spe...

Страница 38: ...t This function read total count values of the rising interrupt occurred on an I 8048W I 9048 channel Syntax C DWORD I8048W_Read_RisingEventCount int slot int channel Parameters slot in Specifies the...

Страница 39: ...This function read total count values of the rising interrupt occurred on an I 8048W I 9048 channel Syntax C DWORD I8048W_Read_FallingEventCount int slot int channel Parameters slot in Specifies the...

Страница 40: ...unt This function clear total count values of the rising interrupt occurred on an I 8048W I 9048 channel Syntax C void I8048W_Clear_RisingEventCount int slot int channel Parameters slot in Specifies t...

Страница 41: ...ngEventCount This function clear total count values of the falling interrupt occurred on an I 8048W I 9048 channel Syntax C void I8048W_Clear_FallingEventCount int slot int channel Parameters slot in...

Страница 42: ...unction is used to initialize the driver and confirm the hardware ID of the I 8048W I 9048 module Syntax C int I8048W_Init int iSlot Parameters iSlot in Specifies the slot number 1 8 Return Value Retu...

Страница 43: ...used to install a slot interrupt service thread for I 9048 Syntax C void I8048W_InstallISR int iSlot CALLBACK_FUNC IST_Function Parameters iSlot in Specifies the slot number 1 8 ISR_Function in After...

Страница 44: ...slotNumber 1 int channelNumber 1 int ret 0 ret I8048W_Init slotNumber if ret I8048W_Set_RisingReg slotNumber channelNumber 1 I8048W_Set_FallingReg slotNumber channelNumber 0 I8048W_InstallISR slotNumb...

Страница 45: ..._UnInstallISR This function is used to uninstall a slot interrupt service thread and disable a hardware interrupt Syntax C void I8048W_UnInstallISR int iSlot Parameters iSlot in Specifies the slot num...

Страница 46: ...tion clear interrupt status of the I 8048W I 9048 channel Syntax C void I8048W_UnFreezeINT int slot int channel Parameters slot in Specifies the slot number 1 8 channel in Specifies the channel number...

Страница 47: ...Reference v 1 0 2 E mail service icpdas com 47 3 18 I8048W_GetLibVersion This function to get the library version of I 8048W I 9048W Syntax C short I8048W_GetLibVersion Return Value Version number For...

Страница 48: ...rence v 1 0 2 E mail service icpdas com 48 Revision History This chapter provides revision history information to this document The table below shows the revision history Revision Date Description 1 0...

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