Secure update distribution?

Started by tadaosystems in Piclist13 years ago 1 reply

I'm trying to figure out a way to distribute software updates without the source code becoming public. I want to use a...

I'm trying to figure out a way to distribute software updates without the source code becoming public. I want to use a bootloader and two wire serial connection to the PC from the circuit board, so new software can be programmed into the flash memory easily. However,


cc5x and a bootloader

Started by rooster_0429 in Piclist13 years ago

I am developing some c code using the cc5x compiler as part of my masters thesis at Tennessee Technological University. I was...

I am developing some c code using the cc5x compiler as part of my masters thesis at Tennessee Technological University. I was hoping someone might be able to help me or point me to an appropriate resource. I am developing a multithreading package for the PIC16F877 and usin


New to list + first question

Started by guillaumedubos in Piclist15 years ago 3 replies

Hi Group ! I'm new to this list. I'm looking for an PIC16F628 bootloader. Unfortunately, the one provided with the Microchip...

Hi Group ! I'm new to this list. I'm looking for an PIC16F628 bootloader. Unfortunately, the one provided with the Microchip Application Note AN0851 doesn't include it, and it seems not to be on Microchip website. Is there a way I can find it ? Another question,


16F88 bootloader

Started by upand_at_them in Piclist14 years ago 92 replies

All the examples I've seen for ICSP use a MAX232, but the PICAXE 18X, which is a PIC16F88, has a simple two-resistor serial...

All the examples I've seen for ICSP use a MAX232, but the PICAXE 18X, which is a PIC16F88, has a simple two-resistor serial interface. Any reasons why I can't use the resistor interface for PIC ICSP? Mike


CRC / CHKSUM

Started by Eirik Karlsen in Piclist14 years ago 14 replies

To those of you that are more experienced (than me); I've now started on a bootloader that will eventually transfer the 14KB program...

To those of you that are more experienced (than me); I've now started on a bootloader that will eventually transfer the 14KB program into the FLASH memory. I'm thinking of breaking the transfer up into 16 or 32 byte frames. Obviously when the program is finally in the memory every single b


MICROCHIPC bootloader - Can't download code into PIC16LF871

Started by vsc_mr in Piclist14 years ago 3 replies

Hi all, Since I can't understand what I am doing wrong I just want to check if anybody has any sugestions. I have a...

Hi all, Since I can't understand what I am doing wrong I just want to check if anybody has any sugestions. I have a PIC16LF871 with "01619 - bootldr-v26-16F870-71-16Mhz-19200bps.hex" programmed inside with the following configuration: Oscil


what does the A in 16F877A means?

Started by mr_gees100_peas in Piclist12 years ago 6 replies

Hi, For a while now I've been wondering what does the A in 16F877A means? I mean what is the difference between a 16F877 and a 16F877A? ...

Hi, For a while now I've been wondering what does the A in 16F877A means? I mean what is the difference between a 16F877 and a 16F877A? My other question is what is a bootloader?


PIC16F84 Smartcard wafer

Started by tallevi21 in Piclist15 years ago

I am creating a project using a smartcard with the pic16f84 and 26lc16 inside. Would anyone have a small bootloader for the...

I am creating a project using a smartcard with the pic16f84 and 26lc16 inside. Would anyone have a small bootloader for the external 24LC16 eeprom? It needs to be small enough so I can still put my program on the pic. The reason being that when the project is complete, ill need t


FTDI USB and the PIC

Started by tadaosystems in Piclist13 years ago 1 reply

I've successfully used a bootloader in combination with an FTDI 232BM USB chip for simple serial communication to the PC, but I have a few ...

I've successfully used a bootloader in combination with an FTDI 232BM USB chip for simple serial communication to the PC, but I have a few questions about how best to power it. The application in question is battery powered, so I want to conserve as much as possible. Can I power the PIC off the battery, and use the power rail coming from the USB port w