Flowcode V4 For Dspic And Pic24 Crack

Flowcode V4 For Dspic And Pic24 Crack

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How to Use Flowcode v4 for dsPIC and PIC24

Flowcode v4 is an advanced graphical programming language (GPL) that allows you to create complex electronic and robotic systems in minutes. Flowcode v4 supports a wide range of microcontrollers, including dsPIC and PIC24 devices from Microchip Technology. In this article, we will show you how to use Flowcode v4 for dsPIC and PIC24 to program some common tasks, such as reading and writing to Flash program memory, using table instructions, and implementing a bootloader.

Reading and Writing to Flash Program Memory

Flash program memory is the non-volatile memory space where the user code is stored and executed on dsPIC and PIC24 devices. You can read and write to Flash program memory using the table instructions TBLRDL, TBLRDH, TBLWTL, and TBLWTH. These instructions allow you to transfer data between the Flash program memory space and the data memory space of dsPIC and PIC24 devices[^1^].

To use the table instructions in Flowcode v4, you need to use the C code icon from the component toolbar. This icon allows you to insert C code snippets into your Flowcode program. For example, the following C code snippet reads a word from Flash program memory at address 0x1000 and stores it in a variable called data:

unsigned int data;

TBLPAG = 0x00; // set table page register

__builtin_tblrdl(0x1000,data); // read low word from 0x1000

The __builtin_tblrdl() function is a built-in function provided by the MPLABÂ XC16 C Compiler that performs the TBLRDL instruction[^2^]. Similarly, you can use the __builtin_tblrdh(), __builtin_tblwtl(), and __builtin_tblwth() functions to perform the TBLRDH, TBLWTL, and TBLWTH instructions respectively.

To write a word to Flash program memory at address 0x2000, you need to use the following C code snippet:

unsigned int data = 0x1234;

TBLPAG = 0x00; // set table page register

__builtin_tblwtl(0x2000,data); // write low word to 0x2000

NVMCON = 0x4003; // set NVMCON for word programming

asm(\"DISI #5\"); // disable interrupts for 5 cycles

__builtin_write_NVM(); // initiate write cycle

The __builtin_write_NVM() function is another built-in function provided by the MPLABÂ XC16 C Compiler that initiates a write cycle to Flash program memory[^2^]. You need to set the NVMCON register according to the type of programming operation you want to perform. In this case, we set NVMCON to 0x4003 for word programming[^1^]. You also need to disable interrupts for a few cycles before calling __builtin_write_NVM() to ensure that no interrupt occurs during the write cycle.

Using Table Instructions

Table instructions are useful for accessing data stored in Flash program memory, such as lookup tables, constants, or strings. You can use table instructions to read or write data from or to any address in Flash program memory space. However, you need to be careful not to overwrite your own code or other important data when writing to Flash program memory.

To use table instructions in Flowcode v4, you can either use the C code icon as explained above, or you can use the Table component from the component toolbar. The Table component allows you to create and access lookup tables in Flash program memory using graphical icons. For example, you can create a lookup table of sine values using the Table component as follows:

Drag and drop a Table component from the component toolbar onto your Flowchart panel.

Double-click on the Table component icon to open its properties dialog.

In the properties dialog, enter a name for your table, such as SineTable.

Select Word as the data type for your table.

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