瑞萨RL78单片机例程 I2C程序

/*********************************************************************************************************************** * DISCLAIMER * This software is supplied by Renesas Electronics Corporation and is only * intended for use with Renesas products. No other uses are authorized. This * software is owned by Renesas Electronics Corporation and is protected under * all applicable laws, including copyright laws. * THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING * THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT * LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * AND NON-INFRINGEMENT. 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All rights reserved. ***********************************************************************************************************************/ /*********************************************************************************************************************** * File Name : r_cg_serial.c * Version : CodeGenerator for RL78/G13 V2.00.00.07 [22 Feb 2013] * Device(s) : R5F100LE * Tool-Chain : CA78K0R * Description : This file implements device driver for Serial module. * Creation Date: 2013-8-6 ***********************************************************************************************************************/ /*********************************************************************************************************************** Pragma directive ***********************************************************************************************************************/ /* Start user code for pragma. Do not edit comment generated here */ /* End user code. Do not edit comment generated here */ /*********************************************************************************************************************** Includes ***********************************************************************************************************************/ #include "r_cg_macrodriver.h" #include "r_cg_serial.h" /* Start user code for include. Do not edit comment generated here */ /* End user code. Do not edit comment generated here */ #include "r_cg_userdefine.h" /*********************************************************************************************************************** Global variables and functions ***********************************************************************************************************************/ volatile uint8_t g_iica0_master_status_flag; /* iica0 master flag */ volatile uint8_t g_iica0_slave_status_flag; /* iica0 slave flag */ volatile uint8_t * gp_iica0_rx_address; /* iica0 receive buffer address */ volatile uint16_t g_iica0_rx_len; /* iica0 receive data length */ volatile uint16_t g_iica0_rx_cnt; /* iica0 receive data count */ volatile uint8_t * gp_iica0_tx_address; /* iica0 send buffer address */ volatile uint16_t g_iica0_tx_cnt; /* iica0 send data count */ /* Start user code for global. Do not edit comment generated here */ /* End user code. Do not edit comment generated here */ /*********************************************************************************************************************** * Function Name: R_IICA0_Create * Description : This function initializes the IICA0 module. * Arguments : None * Return Value : None ***********************************************************************************************************************/ void R_IICA0_Create(void) { IICA0EN = 1U; /* supply IICA0 clock */ IICE0 = 0U; /* disable IICA0 operation */ IICAMK0 = 1U; /* disable INTIICA0 interrupt */ IICAIF0 = 0U; /* clear INTIICA0 interrupt flag */ /* Set INTIICA0 low priority */ IICAPR10 = 1U; IICAPR00 = 1U; /* Set SCLA0, SDAA0 pin */ P6 &= 0xFCU; PM6 |= 0x03U; SMC0 = 1U; IICWL0 = _16_IICA0_IICWL_VALUE; IICWH0 = _14_IICA0_IICWH_VALUE; DFC0 = 0U; /* digital filter off */ IICCTL01 |= _01_IICA_fCLK_HALF; SVA0 = _10_IICA0_MASTERADDRESS; STCEN0 = 1U; IICRSV0 = 1U; SPIE0 = 0U; WTIM0 = 1U; ACKE0 = 1U; IICAMK0 = 0U; IICE0 = 1U; LREL0 = 1U; /* Set SCLA0, SDAA0 pin */ PM6 &= 0xFCU; } /*********************************************************************************************************************** * Function Name: R_IICA0_Stop * Description : This function stops IICA0 module operation. * Arguments : None * Return Value : None ***********************************************************************************************************************/ void R_IICA0_Stop(void) { IICE0 = 0U; /* disable IICA0 operation */ } /*********************************************************************************************************************** * Function Name: R_IICA0_StopCondition * Description : This function sets IICA0 stop condition flag. * Arguments : None * Return Value : None ***********************************************************************************************************************/ void R_IICA0_StopCondition(void) { SPT0 = 1U; /* set stop condition flag */ } /*********************************************************************************************************************** * Function Name: R_IICA0_Master_Send * Description : This function starts to send data as master mode. * Arguments : adr - * transfer address * tx_buf - * transfer buffer pointer * tx_num - * buffer size * wait - * wait for start condition * Return Value : status - * MD_OK or MD_ERROR1 or MD_ERROR2 or MD_ERROR3 ***********************************************************************************************************************/ MD_STATUS R_IICA0_Master_Send(uint8_t adr, uint8_t * const tx_buf, uint16_t tx_num, uint8_t wait) { MD_STATUS status = MD_OK; IICAMK0 = 1U; /* disable INTIICA0 interrupt */ if (1U == IICBSY0) { /* Check bus busy */ IICAMK0 = 0U; /* enable INTIICA0 interrupt */ status = MD_ERROR1; } else if ((1U == SPT0) || (1U == STT0)) { /* Check trigger */ IICAMK0 = 0U; /* enable INTIICA0 interrupt */ status = MD_ERROR2; } else { STT0 = 1U; /* send IICA0 start condition */ IICAMK0 = 0U; /* enable INTIICA0 interrupt */ /* Wait */ while (wait--) { ; } if (0U == STD0) { status = MD_ERROR3; } /* Set parameter */ g_iica0_tx_cnt = tx_num; gp_iica0_tx_address = tx_buf; g_iica0_master_status_flag = _00_IICA_MASTER_FLAG_CLEAR; adr &= (uint8_t)~0x01U; /* set send mode */ IICA0 = adr; /* send address */ } return (status); } /*********************************************************************************************************************** * Function