GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13| GPIO_Pin_14| GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
- GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
+ GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+ GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}
//__IO uint32_t count= 0x100000; // 5 bits per second, for testing
while(count--);
}
+
+/* Used for debugging only.
+
void ledon(){
GPIO_SetBits(GPIOD, GPIO_Pin_14);
}
GPIO_ResetBits(GPIOD, GPIO_Pin_12);
}
+
+
void spibit(int one){
if(one) ledon();
else ledoff();
}
}
-
+*/
//! Count the length of a string.
uint32_t strlen(const char *s){
}
-//! Initialize the USART
-void usartinit(){
- GPIO_InitTypeDef GPIO_InitStructure;
- USART_InitTypeDef USART_InitStructure;
-
+/**************************************************************************************/
+void Repair_Data();
+void RCC_Configuration(void)
+{
/* --------------------------- System Clocks Configuration -----------------*/
/* USART1 clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
/* GPIOB clock enable */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
-
-
-
+}
+
+/**************************************************************************************/
+
+void GPIO_Configuration(void)
+{
+ GPIO_InitTypeDef GPIO_InitStructure;
+
/*-------------------------- GPIO Configuration ----------------------------*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
/* Connect USART pins to AF */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_USART1); // USART1_TX
GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_USART1); // USART1_RX
-
+}
+
+/**************************************************************************************/
+
+void USART1_Configuration(void)
+{
+ USART_InitTypeDef USART_InitStructure;
+
/* USARTx configuration ------------------------------------------------------*/
/* USARTx configured as follow:
- - BaudRate = 9600 baud
+ - BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
- USART_InitStructure.USART_BaudRate = 9600;
+ //USART_InitStructure.USART_BaudRate = 9600;
+ //USART_InitStructure.USART_BaudRate = 10000; //Close enough to 9600
+ //USART_InitStructure.USART_BaudRate = 115200;
+ //USART_InitStructure.USART_BaudRate = 125200; //Close enough to 115200
+
+ //135000 is too high
+ //115200 is too low
+ USART_InitStructure.USART_BaudRate = 125000; //Close enough to 115200
+
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_None;
- //USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
- USART_InitStructure.USART_Mode = USART_Mode_Tx;
+ USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
}
+
+
+//! Initialize the USART
+void usartinit(){
+ RCC_Configuration();
+
+ GPIO_Configuration();
+
+ USART1_Configuration();
+}
//! Initialize the STM32F4xx ports and USB.
ioinit();
usartinit();
+ while(i--) stmdelay();
return;
}
//! Transmit a byte.
void serial0_tx(unsigned char x){
- spiword(0xdead);
-
- while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
+ //Send through USART1 on PB6
+ while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); //original
USART_SendData(USART1, (uint16_t) x);
- spiword(0xbeef);
+ //Spare goes to SPI.
+ //spibyte(x);
}
//! Transmit a byte on the second UART.