Hi

I'm want to use the printf function , so I did an include in my main.c

It works , but the problem is that whatever baudrate I put into the usart_brr register I always have an 9600Baud.
Im working on a cortexm3 processor btw

Any idea what could be wrong here
Below is some startup code :

#include
#include "iostm32f10xxE.h"

void init_cpu (void);
void oled_init (void);
void write_oled_command (unsigned char comm);
void write_oled_data (unsigned char geg);
void delay_ms (unsigned short int);
void write_oled (unsigned char comm, unsigned char dat);
void write_char (unsigned char chr, unsigned char col, unsigned char row);
const unsigned char font8x8[1024];

#define oled_rs (1<<8)
#define oled_cs (1<<9)
#define oled_rd (1<<10)
#define oled_wr (1<<11)
#define oled_res (1<<12)
#define dcdc_shdn (1<<13)

#define mx1 0x17
#define mx2 0x18
#define my1 0x19
#define my2 0x1a
#define mac 0x20
#define mar 0x21

#define charwidth 0x08
#define charheigth 0x08

/*
* NOTES: PLLPRE can be 1 or 2, PLLMUL can be 2..16.
*/
#define LSECLK 32768
#define HSECLK 8000000
#define HSICLK 8000000
#define PLLPRE 1
#define PLLMUL 9
#define PLLCLK ((HSECLK / PLLPRE) * PLLMUL)
#define SYSCLK PLLCLK
#define APB1CLK (SYSCLK / 2)
#define APB2CLK (SYSCLK / 2)
#define AHB1CLK (SYSCLK / 1)

/*
* Values derived from the clock settings.
*/
#define PLLPREBITS ((PLLPRE - 1) << 17)
#define PLLMULBITS ((PLLMUL - 2) << 18)
#define USBPREBITS USBPRE_DIV1P5_BITS
#define FLASHBITS 0x00000012

/*
Definitions for RCC_CR register.
*/
#define CR_HSION_MASK (0x1 << 0)
#define CR_HSIRDY_MASK (0x1 << 1)
#define CR_HSITRIM_MASK (0x1F << 3)
#define HSITRIM_RESET_BITS (0x10 << 3)
#define CR_HSICAL_MASK (0xFF << 8)
#define CR_HSEON_MASK (0x1 << 16)
#define CR_HSERDY_MASK (0x1 << 17)
#define CR_HSEBYP_MASK (0x1 << 18)
#define CR_CSSON_MASK (0x1 << 19)
#define CR_PLLON_MASK (0x1 << 24)
#define CR_PLLRDY_MASK (0x1 << 25)

/*
* Definitions for RCC_CFGR register.
*/
#define CFGR_SW_MASK (0x3 << 0)
#define SW_HSI_BITS (0 << 0)
#define SW_HSE_BITS (1 << 0)
#define SW_PLL_BITS (2 << 0)
#define CFGR_SWS_MASK (0x3 << 2)
#define SWS_HSI_BITS (0 << 2)
#define SWS_HSE_BITS (1 << 2)
#define SWS_PLL_BITS (2 << 2)
#define CFGR_HPRE_MASK (0xF << 4)
#define HPRE_DIV1_BITS (0 << 4)
#define CFGR_PPRE1_MASK (0x7 << 8)
#define PPRE1_DIV1_BITS (0 << 8)
#define PPRE1_DIV2_BITS (4 << 8)
#define CFGR_PPRE2_MASK (0x7 << 11)
#define PPRE2_DIV1_BITS (0 << 11)
#define PPRE2_DIV2_BITS (4 << 11)
#define CFGR_ADCPRE_MASK (0x3 << 14)
#define ADCPRE_DIV2_BITS (0 << 14)
#define ADCPRE_DIV4_BITS (1 << 14)
#define ADCPRE_DIV6_BITS (2 << 14)
#define ADCPRE_DIV8_BITS (3 << 14)
#define CFGR_PLLSRC_MASK (0x1 << 16)
#define PLLSRC_HSI_BITS (0 << 16)
#define PLLSRC_HSE_BITS (1 << 16)
#define CFGR_PLLXTPRE_MASK (0x1 << 17)
#define CFGR_PLLMUL_MASK (0xF << 18)
#define CFGR_USBPRE_MASK (0x1 << 22)
#define USBPRE_DIV1P5_BITS (0 << 22)
#define USBPRE_DIV1_BITS (1 << 22)
#define CFGR_MCO_MASK (0x7 << 24)
#define MCO_DISABLED_BITS (0 << 24)

int main (void)

{

init_cpu();

while(1)
{
printf("Hello World\n\r");
printf("%08X %08X ",RCC_CR,RCC_CFGR);
delay_ms(100);
}

oled_init();
write_char('R',0,0);

while(1);

return(0);

}

void init_cpu (void)

{


/*
* Clocks and PLL initialization.
*/
// HSI setup.
//RCC_CR = HSITRIM_RESET_BITS | CR_HSION_MASK;
//while (!(RCC_CR & CR_HSIRDY_MASK))
; // Waits until HSI stable, it should already be.
// HSE setup.
RCC_CR |= CR_HSEON_MASK;
while (!(RCC_CR & CR_HSERDY_MASK))
; // Waits until HSE stable.
// PLL setup.
RCC_CFGR = PLLSRC_HSE_BITS | PLLPREBITS | PLLMULBITS;
RCC_CR |= CR_PLLON_MASK;
while (!(RCC_CR & CR_PLLRDY_MASK))
; // Waits until PLL stable.
// Clock sources.
RCC_CFGR |= HPRE_DIV1_BITS | PPRE1_DIV2_BITS | PPRE2_DIV2_BITS |
ADCPRE_DIV8_BITS | USBPREBITS | MCO_DISABLED_BITS;
/*
* Flash setup and final clock selection.
*/
FLASH_ACR = FLASHBITS; // Flash wait states depending on clock.
RCC_CFGR |= SW_PLL_BITS; // Switches on the PLL clock.
while ((RCC_CFGR & CFGR_SWS_MASK) != SWS_PLL_BITS)
; //wait for switch done

//set the 32kHz oscillator and enable it
RCC_APB1ENR=0x18000000;
PWR_CR=0x0000100;

// use this code only for the first time after assembling a pcb
//RCC_BDCR=0x00010000;

//RCC_BDCR=0x00008100;
//RCC_BDCR=0x00008101;

// enable needed clocks
RCC_APB2ENR=0x000040a4;

// init usart1 for 115200,n,8,1
GPIOA_CRH=0x000000b0;
USART1_CR1=0x0000200c;
USART1_CR2=0x00000000;
USART1_BRR=0x00000271;