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#include "SWM221.h"
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void SerialInit(void);
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void SystemInit_72MHz(void);
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int main(void)
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{
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SystemInit();
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SerialInit();
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printf("SystemCoreClock = %d\r\n", SystemCoreClock);
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while(1==1)
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{
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SystemInit_72MHz();
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UART_SetBaudrate(UART0, 57600); // <20>л<EFBFBD>ϵͳ<CFB5><CDB3>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ò<EFBFBD><C3B2><EFBFBD><EFBFBD><EFBFBD>
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for(int i = 0; i < 4; i++)
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{
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printf("SystemCoreClock = %d\r\n", SystemCoreClock);
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for(int j = 0; j < SystemCoreClock / 8; j++) __NOP();
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}
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SystemInit();
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UART_SetBaudrate(UART0, 57600);
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for(int i = 0; i < 4; i++)
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{
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printf("SystemCoreClock = %d\r\n", SystemCoreClock);
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for(int j = 0; j < SystemCoreClock / 8; j++) __NOP();
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}
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}
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}
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void SystemInit_72MHz(void)
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{
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Flash_Param_at_xMHz(72);
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switchToHRC();
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switchOnPLL(SYS_CLK_8MHz, 2, 18);
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switchToDIV(SYS_CLK_PLL, SYS_CLK_DIV_1);
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Flash_Param_at_xMHz(CyclesPerUs);
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}
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void SerialInit(void)
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{
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UART_InitStructure UART_initStruct;
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PORT_Init(PORTA, PIN0, PORTA_PIN0_UART0_RX, 1); //GPIOA.0<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪUART0 RXD
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PORT_Init(PORTA, PIN1, PORTA_PIN1_UART0_TX, 0); //GPIOA.1<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪUART0 TXD
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UART_initStruct.Baudrate = 57600;
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UART_initStruct.DataBits = UART_DATA_8BIT;
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UART_initStruct.Parity = UART_PARITY_NONE;
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UART_initStruct.StopBits = UART_STOP_1BIT;
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UART_initStruct.RXThreshold = 3;
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UART_initStruct.RXThresholdIEn = 0;
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UART_initStruct.TXThreshold = 3;
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UART_initStruct.TXThresholdIEn = 0;
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UART_initStruct.TimeoutTime = 10;
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UART_initStruct.TimeoutIEn = 0;
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UART_Init(UART0, &UART_initStruct);
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UART_Open(UART0);
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}
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/******************************************************************************************************************************************
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* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: fputc()
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* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: printf()ʹ<EFBFBD>ô˺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>ʵĴ<EFBFBD><EFBFBD>ڴ<EFBFBD>ӡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: int ch Ҫ<EFBFBD><EFBFBD>ӡ<EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>
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* FILE *f <EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
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* ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
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******************************************************************************************************************************************/
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int fputc(int ch, FILE *f)
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{
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UART_WriteByte(UART0, ch);
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while(UART_IsTXBusy(UART0));
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return ch;
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}
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