- #PICBASIC PRO 3 CHECK COMPILED SIZE HOW TO#
- #PICBASIC PRO 3 CHECK COMPILED SIZE ARCHIVE#
- #PICBASIC PRO 3 CHECK COMPILED SIZE CODE#
- #PICBASIC PRO 3 CHECK COMPILED SIZE PC#
#define SCL TRISFbits.TRISF5 // I2C clock This definition and the initialization is probably all you'll need to change for a The port pins still need to be read though, so they're defined as SCL_IN and SDA_IN. to control the output, keeping the output register low. Since the SCL and SDA lines are open drain type, we use the tristate control register with minor changes to the I/O pin definitions. It is written in C for the PIC processor, but should be applicable to most processors
#PICBASIC PRO 3 CHECK COMPILED SIZE HOW TO#
This example shows how to implement a software I2C master, including clock stretching.
#PICBASIC PRO 3 CHECK COMPILED SIZE CODE#
Code copied/modified from web tutorial: Maybe these posts and threads can be of help regarding bit-banging I2C: I2C in master mode failed How to reset an EEPROM that hangs the I2C bus Bitbang I2C tutorial This is where I got the base of my code Here is an image showing how my EEPROM is connected to the PIC24 using only 2 pins and 2 resistors: My code can be seen in this clip from my sourcefiles: Bit-bang also has the advantage that it works on all kinds of hardware. Could not get the I2C subsystem working on the PI24 chip so I reverted to a bit-bang approach instead and got that working fine in less than a day. I struggled 2 weeks with read/write off of a EEPROM using I2C a numbers of years ago.
#PICBASIC PRO 3 CHECK COMPILED SIZE PC#
If you have ever made program for PC of any kind, there is 1000 times more functions not needed.
You may safely ignore warnings about functions not called, or make into comments, or remove functions you do not need. Since these functions are present in project source, linker may create warnings about functions that are not called, assuming it is something you have made with the intention of using, but missed because of mistyping or other.
#PICBASIC PRO 3 CHECK COMPILED SIZE ARCHIVE#
Since MCC copy code into a program source directory, instead of loading pre-compiled objects from a library archive file, it is just much more visible. Like all general purpose library code, there is always more functions available than those you will need to use. Don't be too put off by those functions generated by MCC that you will not need. This make need for a little arithmetic and testing on EEPROM address before writing. Then real hardware EEPROM memory have the restriction that writing must be done only within one page at a time. It will both take more time than needed, and also cause more wear on EEPROM cells. Firstly, writing one word at a time to I2C EEPROM memory, is stupid when there is an array to be transferred. Then the example code in header files created by MCC have room for improvement. If ((WriteStatR = I2C_ERROR_FAIL) ||( WriteStatR = I2C_ERROR_QUEUE_FULL)) I2C1_MasterWrite( WriteData, Size, RLY08_ADDRESS, &WriteStat) * it should be declared with enumeration type: I2C_MESSAGE_STATUS WriteStat * WriteStat must be a static or global variable, It will be updated with status of the transfer. * Address argument is I2C address of slave device in 7 bit format,
* Size argument is number of Bytes to transfer.
* holding the application's data until transfer is completed. * WriteData must be a static or global array, * Function I2Cx_MasterWrite will send Start signal, Address and contents of WriteData array. The function made by MCC for this purpose is I2Cx_MasterWrite, the first part of the function name may be I2C_, I2C1_, I2C2_ or I2C3_ depending upon the hardware and what settings you have done in MCC menu. Even the code generated by MCC have several weak points, but if your program have nothing better to do, than waiting for I2C hardware to transfer data, and then wait for the EEPROM to complete it's internal write operation, it may work. As for now, I think the code generated by MCC may still be the best starting point. I think I may have something for PIC24 within a week. I have used something like half a year on very similar things for PIC16, PIC18, PIC32MX and PIC32MM. Hi, It actually is a bit difficult to do it in a way that work every time and all the time.
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