Hello friends,

I am using STM32F103C8 board for learning ARM cortex M3. I am new to this MCU.

Till now I have worked directly on MCU registers, (PIC, ATMEL, ARM7) like if I have to set some value to port, then I have used GPIOx_ODR=0x0000; like wise. 

To do same I need start up file for STM32F103C8 MCU. 

I have downloaded  projects from online. That are working, but not defined with GPIOx_ODR this type of register names.

I have to use register names that are given in datasheet directly. 

Kindly help me.

I dont have to use HAL library. 

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