I have a question is. Microchip's HCS200 chip has to write code and load code for it. As the forum owner wrote the program for pic12f629 to decode the HCS200.
The program was loaded into the pic as per the article, and then the HCS200 was programmed to accept the pic program.
Please, see this Datasheet HCS200 :
http://ww1.microchip.com/downloads/en/DeviceDoc/40138c.pdf
The HCS200 contains 192 bits (12 x 16-bit words) of EEPROM memory (Table 3-1). This EEPROM array is
used to store the crypt key information, synchronization value, etc.
The kript key should be the same on the receiver and transmitter. Was used Key 0123456789ABCDEF in the receiver.
Make:
Sync=0, SEED_0=0, SEED_1=0, SER_0=0 (or choice another),SER_1=0 (or choice another), CONFIG bit 0 to 11 = SER_0 bit 0
to 11, CONFIG bit 12 =1 (low trip point - 9 a 12 volts), CONFIG bit 13,14,15=0 (400 us baudrate).
Use PicKit2 or another programmer to program these settings on the HCS200.
.
You can also see this note application that describes how to build a programmer: Note application AN217 :
http://ww1.microchip.com/downloads/cn/AppNotes/cn_00217a.pdf
If the HCS200 has been preloaded, can we read that code?
Unfortunately its not possible. See Datasheet HCS200 page 10: "For security reasons, it is not possible to execute a Verify function without first programming the EEPROM. A Verify operation can only be done immediately following the Program cycle."
You can instruct to program the program and then write to the HCS200. I want to make the remote control the door. Thank you!
Can you help me?
If you do not have experience with programming pics will be very difficult to achieve success. Try to start by learning to program pics by watching youtube videos or doing a programming course. After learning to program, you should load the firmware of the pic 12f629 of the article and then program the Hcs 2xx with the values shown in the comment above (Key, Sync, etc).
I wish success in your endeavor
Cláudio
I also know programming with the pic microcontroller line. The way I ask is because I do not see any documentation that shows how to load code for the HCS200 chip. Your program is written in ASM language, if written in CCS is good
