Posted on December 07, 2011 at 02:00Hi, its me again 🙂
i have my stm32f103ze USART2 with 38400 baud connected to a bluetooth modul that uses rx, tx, rts, cts.
I must send some commands to the bluetooth device via USART:
/* USART2 Clock an*/
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
/*Init USART2 USART2: CTS PA0, RTS PA1, TX PA2, RX PA3 */
/* Configure USART2 RTS and USART2 Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART2 CTS and USART2 Rx as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 38400;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_RTS_CTS;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART2, &USART_InitStructure);
USART_Cmd(USART2, ENABLE);
/* Init BT */
IMU_Led1_On();
Delay(100);
send_string(''STWMOD=0\r\n'');
send_string(''STBD=38400\r\n'');
Delay(200);
send_string(''STNA=IMU\r\n'');
send_string(''STAUTO=0\r\n'');
send_string(''STOAUT=1\r\n'');
send_string(''STPIN=0000\r\n'');
Delay(200);
send_string(''INQ=0\r\n'');
Delay(200);
/* send_string function for BT */
void send_string(const char *str)
{
while (*str)
{
while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
USART_SendData(USART2, *str++);
}
}
How can I check the Echo from the Module in my Keil Debugger?
I cant connect the modul to my PC RS232 because its hard mounted (SMD) on the PCB.
And is there a possiblity in the debugger to write commands for testing if the commands that im sending are correct?
with regards
sam
