Picbasic pro 3 lcd problems pro#
Picbasic pro 3 lcd problems code#

Wsave3 var byte $1a0 system ' Necessary for devices with RAM in bank3Д®ncoder_history VAR BYTE:encoder_history = 0 'Store the current and last state of channelA/B of the encoder Wsave2 var byte $120 system ' Necessary for devices with RAM in bank2 Wsave1 var byte $a0 system ' Necessary for devices with RAM in bank1 I'm pretty new at writing PICBasic and Assembly.ДEFINE LOADER_USED 1 ' remove if you dont use a bootloader!!ДEFINE OSC 20 ' set the correct speed here!! Also, I'm not sure if I need to pay attention to the PCLATH register. I think I Need to add an 'org' statement there somewhere, but not really sure where. I'm also not sure if my use of GOTO statements after adding to the PCL is okay. So basically I'm guessing my program is jumping into hyperspace. It does not work because the value of the PCL before adding is more than 240, the max value in order to add 0-15 to it. I think this has to do with how I add to the PCL for the lookup table.

Picbasic pro 3 lcd problems code#

The problem is, when I use this code, sometimes the lookup table works and other times it does not, if I make a change to the code NOT IN THE ASSEMBLY portion. The interrupt goes to an assembly routine, which then sorts out the values of the encoder channels, and picks between increment, decrement, error, or no change from a lookup table. I have created an interrupt on PORTB 4-7 pin change. I am making a quadrature encoder counter (which will later also do PID). I'm using a PIC16F877A on an MELabs Lab-X2 board. I am using the MPASM assembler, with a bootloader (not sure the bootloader name).

Picbasic pro 3 lcd problems pro#

Two LED's flash like a railroad crossing.I am using Picbasic Pro (with Microcode studio plus). Measures water depth with MPX4250AP sensorД¬ontrol 4 LEDs over fiber-optic cable using 4 variablesД¬ontrol 4 LEDs over fiber-optic cable using 1 variableД¬ontrol 2 motors' speed over fiber-optic cable.

LED's light up as sonar is brought close to an object. Use flex sensor to rotate hobby servo See Video Uses limit switches to reverse motor See Video Servo position determined by switch inputsДrives dc motors at different speeds. Rotates servo cwise and ccwise in incremental steps Rotates servo cwise and ccwise using PAUSEUS Rotates servo cwise and ccwise using PULSOUT Use shift operator << to shift value to left Sends simple signal through fiber-optic cable

LED turns on when active low switch is pressed LED turns on when active high switch is pressed PIC acts as a sink output to light an LED PIC acts as a source output to light an LED LED flashes on and off one time per half second using different commands.Д®ight LED's scroll on from the right then to the left then back again.Д®ight LED's scroll off from the right then to the left.Дemonstrates several commands to move LCD cursor.Дisplay resistance readings from a potentiometer. LED flashes on and off one time per second. The cost for both the PicBasic Pro Compiler 3.0 and the U2 Programmer with Accessories ranges from $174.90 to $394.90 USD depending upon which version of PicBasic Pro Compiler 3.0 purchased. The programs are written in PicBasic Pro from micro-Engineering Labs, Inc.,. Some of the programs have adapted to the PIC16F877A. Microchipdirect lists the PIC16F88-I/P at $2.60 each for quantities less than 26. Jameco stocks the PIC16F88-I/P at a cost of $3.25 each for quantities less than 10. The microcontroller used for the most part is the PIC16F88-I/P from Microchip Technology, Check Technical Lessons for Year 2 for more background information.

Most of the programs are very short, focusing on one new command or a new application of a command.

These fundamental PicBasic Pro programs were written to introduce new statements that periodically would be combined into a program with a robotic application.