iDevOS Software General Overview        Update History                             Topics    General Setup   Interface Setup   Page   Data   Timing   Overview Overview RS232 Overview Overview Overview Get Started INT RS485 PAGE LOAD RTC/RTA Prog Tips RESET Async POSN VAR Counters Prog Guide System SPI TEXT STRUCT Timers Fonts LIB I2C DRAW FILE WAIT Colours FPROG USB IMG CALC LOOP Arrays INC Keyio KEY RUN     Format Data Styles Rotary Encoder Page Loop FUNC     Inline Functions DEL ADC SHOW, HIDE IF Software   CANBUS Touch PWM Refresh;; CASE Specification MODBUS     AC97     EXIT

Command I/O Counter   Description The 31 I/O counters use pre-define variables which can be reset and tested for value. The counter uses an unsigned 32bit register (U32) with names CNTKxx where xx=00 to 30. They require the I/O to be set as an interrupt but do not require an associated INT() command. Counter increment depends on the rising or falling edge of the interrupt. The command RESET(CNTK00) resets to zero the I/O counter on K00. The maximum counter speed is 0-10kHz+ and is dependent on other interrupt and entity usage.   Syntax/Parameters CNTK00-CNTK30   Example IF(CNTK00>300?Func300);   //if greater than 300 run function called Func300 TEXT(K00Text,CNTK00);;     //update counter value on page and refresh screen   Command RunTime Counter   Description The RUNTIME counter uses pre-define variables which can be set and tested for values The command Reset(RUNTIME) sets all vales to zero and starts the timer. This runtime counter is independent of the real time clock and runs continually so no setup is required.   Syntax/Parameters CNTMILLI - Increments every millisecond 0-999 CNTSECS - Increments every second 0-59 CNTMINS - Increments every minute 0-59 CNTHOURS - Increments every hour 0-23 CNTDAYS - Increments every 24 hours CNTRUN - Increments every millisecond since system reset. 86,400,000 = 1 day - v47.12.   Options RunTime Counter Interrupts Wrap-around interrupt for the RunTime counter have been added.        INT(name,CNTMILLI,function);  // function called every 1000ms        INT(name,CNTSECS,function);   // function called every 60s        INT(name,CNTMINS,function);   // function called every 60mins        INT(name,CNTHOURS,function);  // function called every 24hours        INT(name,CNTDAYS,function);   // function called every 2^32days        For timer resolutions of less than a second, use TIMER0 to TIMER9.   Example IF(CNTMINS>30?FuncHalfHour);   //if greater than 30 minutes run function called FuncHalfHour TEXT(MinsText,CNTMINS);;         //update counter value on page and refresh screen   Update Information  Version  Title Date    Details 49.48  System Timer Accuracy 21 Nov 13  Show * Fixed accuracy of 200us system tick timer - used for incrementing counters CNTRUN, CNTMILLI, ... CNTDAYS, TIMER0-TIMER19, and decrementing WAIT(). * Wrong divider value was being used. Needed to be divider value minus one. * This resulted in a tick value of 200.174us rather than 200us. * Assuming a perfect crystal frequency giving a 92,000,000Hz clock then there would be a +0.87ms error for every second. 49.32  Count per second / 100ms - Added ability to count number of I/O events per second or 100ms. 14 Feb 13  Show * Added ability to count number of I/O events per second or 100ms. * Additional parameters added to KEYIO setup: cntpersec = \\xxxxxxxx; cntper100m = \\xxxxxxxx; * Any I/O port that is enabled with either of these settings result in value of CNTKxx being the number of events received during the last 1 second / 100ms time slot. 49.00  Interrupts - Fixed problem with interrupts stopping after 255 interrupts 22 Mar 12  Show Fixed problem with interrupts stopping after 255 interrupts 49.00  Error Interrupt Handlers - Code now jumps to error handlers for Prefetch Abort, Data Abort, SWI, and Undefined Interrupts. 22 Mar 12  Show Code now jumps to error handlers for Prefetch Abort, Data Abort, SWI, and Undefined Interrupts. 47.12  Total Run Counter - CNTRUN added which counts milliseconds since startup or reset of RUNTIME counters. 09 Sep 11  Show CNTRUN added which counts milliseconds since startup (with no wrapping at 1000ms) or reset of RUNTIME counters. 45.00  RunTime Counter Interrupts - Wrap-around interrupt for the RunTime counter have been added. 10 Jun 11  Show Wrap-around interrupt for the RunTime counter have been added. INT(name,CNTMILLI,function); // function called every 1000ms INT(name,CNTSECS,function); // function called every 60s INT(name,CNTMINS,function); // function called every 60mins INT(name,CNTHOURS,function); // function called every 24hours INT(name,CNTDAYS,function); // function called every 2'32days For timer resolutions of less than a second, use TIMER0 to TIMER9. 41.00  Introduce 24 I/O-Counters - Added counter on each of K-inputs K00 to K23. 26 Jan 11  Show Added counter on each of K-inputs K00 to K23. These can be accessed as U32 Vars with reserved names CNTK00 to CNTK23. The count values can be read and tested. RESET(CNTKxx); will clear the counter. 23.00  CNTMILLI - Runtime counter implemented. 17 Aug 10  Show Runtime counter implemented. Access via: CNTMILLI, CNTSECS, CNTMINS, CNTHOURS, CNTDAYS