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1、nRF2401驱动程序（MSP430）（上）最近在用nRF2401,本来也想偷个懒，上网上下一个程序随便改改了事，但找了好长时间发现几乎都是一个版本，而且并不是那么好用。一个好的驱动程序应该是很好移植的，这就要求在驱动程序中尽量少用全局的变量，把与体系相关的部分放在头文件中，当跨平台移植时，只需改改头文件即可，同时也要把相关的参数配置通过宏定义的形式列出来，用户只需简单的修改宏定义就可以满足自己的要求。本驱动程序希望能达到这个目的，由于水平有限，程序中的不足在所难免，希望大家指正。/* 文件名：nrf2401.h* 功 能：nRF2401驱动程序头文件*/#ifndef NRF2401_H#d
2、efine NRF2401_H#include /* 接口说明：* CS:P4.6, CE:P5.2, PWR_UP:P5.3, DR1:P4.5, CLK1:P4.4* DATA:P4.3, DR2:P5.1, CLK2:P5.0, DOUT2:P4.7*/#define CS BIT6#define CE BIT2#define PWR_UP BIT3#define DR1 BIT5#define CLK1 BIT4#define DATA BIT3#define DR2 BIT1#define CLK2 BIT0#define DOUT2 BIT7#define CS_H P4OUT |
3、= CS#define CS_L P4OUT &= CS#define CE_H P5OUT |= CE#define CE_L P5OUT &= CE#define PWR_UP_H P5OUT |= PWR_UP#define PWR_UP_L P5OUT &= PWR_UP#define CLK1_H P4OUT |= CLK1#define CLK1_L P4OUT &= CLK1#define DATA_OUT P4DIR |= DATA#define DATA_OUT_H P4OUT |= DATA#define DATA_OUT_L P4OUT &= DATA#define DR
4、1_IN P4DIR &= DR1#define DR1_IN_H P4IN & DR1 / DR1输入是否为高电平#define DATA_IN P4DIR &= DATA#define DATA_IN_H P4IN & DATA / DATA输入是否为高电平#define CLK2_H P5OUT |= CLK2#define CLK2_L P5OUT &= CLK2#define DOUT2_IN P4DIR &= DOUT2#define DOUT2_IN_H P4IN & DOUT2 / DOUT2输入是否为高电平#define DR2_IN P5DIR &= DR2#define
5、DR2_IN_H P5IN & DR2 / DR2输入是否为高电平/* 相应端口设为IO模式*/static inline void IO_MODE() P4SEL &= (DATA + CLK1 + DR1 + CS + DOUT2); P5SEL &= (CLK2 + DR2 + CE + PWR_UP);/* IO端口方向初始化*/ static inline void IO_DIR_INIT() P4DIR |= (DATA + CLK1 + CS); DR1_IN; DOUT2_IN; P5DIR |= (CLK2 + CE + PWR_UP); DR2_IN;/* * IO初始化*
6、/static inline void IO_Init(void) IO_MODE(); IO_DIR_INIT(); #define IO_INIT() IO_Init()/* * nRF2401配置宏，所有的参数都在这里设置 */#define DATA2_W 0 / Length of data payload section RX channel 2 #define DATA1_W 32 / Length of data payload section RX channel 1 / 本驱动程序只支持8的整数倍的数据长度 / DATAx_W(bits) = 256 - ADDR_W -
7、CRC#define ADDR2_0 0x1f / Up to 5 byte address for RX channel 2 #define ADDR2_1 0x3f#define ADDR2_2 0x00#define ADDR2_3 0x00#define ADDR2_4 0x00#define ADDR1_0 0x26 / Up to 5 byte address for RX channel 1#define ADDR1_1 0x26#define ADDR1_2 0x00#define ADDR1_3 0x00#define ADDR1_4 0x00#define ADDR_W 1
8、6 / Number of address bits (both RX channels) / 本驱动程序只支持8、16、32、40地址位数 #define CRC_L 0 / 8 or 16 bit CRC Logic 0: 8 bit CRC Logic 1: 16 bit CRC #define CRC_EN 1 / Enable on-chip CRC generation/checking / Logic 0: On-chip CRC generation/checking disabled / Logic 1: On-chip CRC generation/checking ena
9、bled#define RX2_EN 0 / Enable two channel receive mode / Logic 0: One channel receive / Logic 1: Two channels receive /receive channel 2 is always 8 channels (8 MHz) above receive channel 1 #define CM 1 / Communication mode (Direct or ShockBurst) / Logic 0: nRF2401A operates in direct mode. / Logic
10、1: nRF2401A operates in ShockBurst mode#define RFDR_SB 0 / RF data rate (1Mbps requires 16MHz crystal) / Logic 0: 250 kbps Logic 1: 1 Mbps#define XO_F 3 / Crystal frequency 0:4M 1:8M 2:12M 3:16M 4:20M #define RF_PWR 3 / RF output power(dbm) 0:-20 1:-10 2:-5 3:0 #define RF_CH 60 / Frequency channel(7
11、bit,0 - 127) / ChannelRf=2400M + RF_CH * 1M #define RXEN 0 / RX or TX operation / Logic 0: transmit mode Logic 1: receive mode /* Enter Active modes */extern void RF_Active(void);/* Enter Configuration modes */extern void RF_Config(void);/* Enter Stand by modes */extern void RF_Standby(void);/* Powe
12、r down modes* Note:When the nRF2401A is in power down it must always settle * in stand by mode for 3ms before it can enter configuration or one * of the active modes. */extern void RF_PowerDown(void);/* nRF2401初始化*/extern void RF_Init(void);/* 向指定channel指定地址发送指定数据* channel:接收端的频道（0 - 127）* addr: 接收端的地址的指针* alength:地址长度（byte)* sendbuffer：要发送数据的首指针* dlength:数据长度*/extern void RF_SendData(unsigned char channel, unsigned char *addr,
