用msp430单片机和RDA5807实现收音机的原理图、代码.docxVIP

RDA5807的MSP430代码、原理图说明：这是我用MSP430G2553单片机实现RDA5807收音芯片实现自动搜台收音机功能的代码（附原理图）。这个收音机有两个按键，一个用于向上搜台，另一个用于向下搜台。用耳机做天线。本文档包含三个C文件和两个H文件（见下表）MAIN.C主程序INITG2553.CMSP430G2553的初始化代码（有些在这个工程中没用到）G2553I2C.CMSP430G2553的I2C代码（有些在这个工程中没用到）G2553I2C.HG2553I2C.C中函数的头文件INITG2553.HINITG2553.C中函数的头文件亲测能用，工作正常，在这里与大家分享。MAIN.C#includemsp430.h#includeInitG2553.H#includeG2553I2C.H/* * main.c */#defineCHIP_ADDR_STD0x11#defineCHIP_ADDR_SQE0x10#define REG020x02#define REG030x03#define REG0A0x0A#define REG0B0x0B#define R02_SEEK0x0100#define R02_SEEKUP0x0200#define R03_TUNE0x0010#define R0A_STC0x4000#define R0A_SF0x2000voidRDA5807_init();unsignedintRDA5807_seek();unsignedintRDA5807_readfreq();unsignedintRDA5807_readRSSI();intfreq;intrssi;intmain(void) {unsignedinti;volatileunsignedint R0a,R0b; WDTCTL = WDTPW | WDTHOLD;// Stop watchdog timerinit_clk(); init_I2C();init_IO(); RDA5807_init(); _BIS_SR(GIE);while(1);return 0;}// Port 1 interrupt service routine#pragma vector=PORT1_VECTOR__interruptvoidPort_1(void){unsignedinti;unsignedint reg02_temp;for(i=0; i=60000; i++);for(i=0; i=60000; i++);if(P1IFG BIT4)//S2按下{P1IFG=0;if(P1IN BIT4) return;//向上调台reg02_temp=ReadI2C_ADDR_WORD(CHIP_ADDR_STD, REG02);reg02_temp |= R02_SEEKUP;WriteI2C_ADDR_WORD(CHIP_ADDR_STD, REG02, reg02_temp);freq=RDA5807_seek();rssi=RDA5807_readRSSI();return;}if(P1IFG BIT5)//S3按下{P1IFG=0;if(P1IN BIT5) return;//向下调台reg02_temp=ReadI2C_ADDR_WORD(CHIP_ADDR_STD, REG02);reg02_temp = ~R02_SEEKUP;WriteI2C_ADDR_WORD(CHIP_ADDR_STD, REG02, reg02_temp);freq=RDA5807_seek();rssi=RDA5807_readRSSI();return;}}voidRDA5807_init(){unsignedinti;for(i=0; i=60000; i++);for(i=0; i=60000; i++);for(i=0; i=60000; i++);for(i=0; i=60000; i++);WriteI2C_ADDR_WORD(CHIP_ADDR_STD, 0x02, 0x0002);for(i=0; i=60000; i++);WriteI2C_ADDR_WORD(CHIP_ADDR_STD, 0x02, 0xC201);for(i=0; i=60000; i++);WriteI2C_ADDR_WORD(CHIP_ADDR_STD, 0x03, 0x0000);WriteI2C_ADDR_WORD(CHIP_ADDR_STD, 0x04, 0x0400);WriteI2C_ADDR_WORD(CHIP_ADDR_STD, 0x05, 0x86B0);RDA5807_seek();}unsigned