APB confusion

Note: This was originally posted on 1st September 2011 at http://forums.arm.com Hi, This may seem a very basic doubt. I have implemented APB peripheral on a Cortex M1 based ACTEL platform. I do 3 memory...
Bootloader confusion

Hi, I am using the Keil uVision 3.23 and I have an AT91SAM7S256 board here. I'd like to implement a bootloader that will always start when the board is powered, and checks if there is code to...
Preprocessor Confusion?

Why does Keil's C51 preprocessor work fine with: #define MULTPLR (unsigned char)((float)9.114584e-5 * (float)18432000 / (float)12) ...but consistently give the wrong result with: #define...
confused characters

HI I have a stm32f103c8t6. I connected data pin of LCD to portA.& RS,RW,EN to PB0...PB2 . but my lcd is really confused. everyTime i send "111" to LCD it shows "333". everyTime i send "qqq" to LCD...
output confusion

I use an RF 315/434 MHz ASK RECEIVER and 315/434 MHz ASK TRANSMITTER for the communication between two 89c52 microcontrollers. I am a beginner. In the transmitter microcontroller i use the normal code...