[讨论] 关于RL78的IICA读20c04的程序那个大哥有，发一个出来。

关于RL78的IICA读20c04的程序那个大哥有，发一个出来。

这里边有一个RL78R5F104LE_EEPROM_CSI的例程不知道是不是你想要的。
http://www.pudn.com/downloads582 ... /detail2385873.html

#define "r_cg_macrodriver.h" #pragma interrupt INTIICA0 IICA_IRQHandler typedef enum { WRITE_CMD_TYPE, READ_CMD_TYPE }IICA_CMD_TYPE; typedef enum [ IICA_IDLE_STATE, IICA_SEND_SLAVE_ADDR_STATE, IICA_SEND_DATA_ADDR_STATE, IICA_RECEIVE_DATA_STATE, IICA_STOP_STATE }IICA_STATE; typedef struct { IICA_STATE state; IICA_CMD_TYPE cmdType; uint8_t slaveAddr; uint8_t dataAddr; uint8_t *pbuffer; uint16_t number; }IICA_PARA; volatile IICA_PARA IICA_Para; void IICA_MasterComunicate(IICA_CMD_TYPE cmd, uint8_t slaveAddr, uint8_t dataAddr, uint8_t *pbuffer, uint16_t number) { uint8_t wait = 0x1F; if (number == 0) { return; } IICA_Para.cmdType = cmd; IICA_Para.slaveAddr = slaveAddr; IICA_Para.dataAddr = dataAddr; IICA_Para.pbuffer = pbuffer; IICA_Para.number = number; IICA_Para.state = IICA_SEND_SLAVE_ADDR_STATE; STT0 = 1U; /* set IICA0 start condition */ IICAMK0 = 0U; /* enable INTIIA0 interrupt */ while (wait--); IICA0 = slaveAddr; // the command is Write command for the slave address sending } static void __interrupt IICA_IRQHandler(void) { if (IICA_Para.cmdType == WRITE_CMD_TYPE) { IICA_MasterWrite(); } else { IICA_MasterRead(); } } static void IICA_MasterRead(void) { uint8_t wait = 0x0F; if ((1 == TRC0) && (0 == ACKD0))) { /* error occur, add your own code here */ IICA_Para.state = IICA_IDLE_STATE; } switch(IICA_Para.state) { case IICA_SEND_SLAVE_ADDR_STATE: IICA0 = IICA_Para.dataAddr; IICA_Para.state = IICA_SEND_DATA_ADDR_STATE; break; case IICA_SEND_DATA_ADDR_STATE: STT0 = 1; //generate the start condition again while (wait--); //wait a short time for the generation of start condition IICA0 = IICA_Para.slaveAddr | 0x01; WTIM0 = 0; //the master will genterate the interrupt at the falling edge of eighth clock ACKE0 = 1 //enable to send ACK IICA_Para.state = IICA_RECIEVE_DATA_STATE; break; case IICA_RECEIVE_DATA_STATE: *IICA_Para.pbuffer++ = IICA0; if (--IICA_Para.number == 0) { ACKE0 = 0; //the last data send the NACK. Note that the ackownlege signal is not sent untile the SCL line is released WTIM0 = 1; //master will generate interrupt at the falling edge of the ninth clock pulse IICA_Para.state = IICA_STOP_STATE; } //at this time when receiving the last data, the ackownlege singal is not sent from master WREL0 = 1; //release the SCL; Note that the master will pull down the clock after entering ingterrupt break; case IICA_STOP_STATE: SPT0 = 1; IICA_Para.state = IICA_IDLE_STATE; break; } } 只提供不完整的, 本帖最后由 木瓜子 于 2015-11-24 18:53 编辑

https://bbs.eeworld.com.cn/thread-487467-1-1.html，这个帖子有完整的资料。