c8051单片机使用smbus（I2C）接口的测试程序，keil开发环境-C8051 Singlechip use smbus (I2C) interface testing procedures, keil Development Environment

FM25L16铁电存储器与F020读写 unsigned char SpiReadWrite(unsigned char c) { SPIF = 0; SPI0DAT = c; while (SPIF == 0); return SPI0DAT; } /* unsigned char FMRead(unsigned int addr) { unsigned char b; fm0(); _nop_(); _nop_(); _nop_(); _nop_(); SpiReadWrite(EE_READ); SpiReadWrite(addr >> 8); SpiReadWrite(addr & 0xff); b = SpiReadWrite(0); _nop_(); _nop_(); fm1(); _nop_(); _nop_(); return b; } void FMWrite(unsigned int addr, unsigned char b) { fm0(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); SpiReadWrite(EE_WREN); _nop_(); _nop_(); _nop_(); fm1(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); fm0(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); SpiReadWrite(EE_WRITE); SpiReadWrite(addr >> 8); SpiReadWrite(addr & 0xff); SpiReadWrite(b); _nop_(); _nop_(); fm1(); _nop_(); _nop_(); } */ void FMReadPage(unsigned int addr, unsigned char * index, unsigned char n) { unsigned char i; fm0(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); SpiReadWrite(EE_READ); SpiReadWrite(addr >> 8); SpiReadWrite(addr & 0xff); for(i=0;i> 8); SpiReadWrite(addr & 0xff); for(i=0;i

2021-09-13 11:18:57 2KB 铁电存储器

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