| /******************************************************************************* | |
| * 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. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED. | |
| * TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS | |
| * ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE | |
| * FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR | |
| * ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE | |
| * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
| * Renesas reserves the right, without notice, to make changes to this software | |
| * and to discontinue the availability of this software. By using this software, | |
| * you agree to the additional terms and conditions found by accessing the | |
| * following link: | |
| * http://www.renesas.com/disclaimer | |
| * | |
| * Copyright (C) 2014 Renesas Electronics Corporation. All rights reserved. | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| * System Name : RZ/T1 Init program | |
| * File Name : r_ecm.c | |
| * Version : 0.1 | |
| * Device : R7S9100xx | |
| * Abstract : API for ECM function | |
| * Tool-Chain : IAR Embedded Workbench Ver.7.20 | |
| * OS : not use | |
| * H/W Platform : Renesas Starter Kit for RZ/T1(Preliminary) | |
| * Description : ECM API of RZ/T1 | |
| * Limitation : LOCO operation is necessary for clearing ERROROUT# pin. | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| * History : DD.MM.YYYY Version Description | |
| * : First Release | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| Includes <System Includes> , "Project Includes" | |
| *******************************************************************************/ | |
| #include <stdint.h> | |
| #include <Renesas/ior7s910017.h> | |
| #include "r_system.h" | |
| #include "r_ecm.h" | |
| #include "r_reset.h" | |
| #include "r_icu_init.h" | |
| /******************************************************************************* | |
| Macro definitions | |
| *******************************************************************************/ | |
| #define ECM_CMT0_CLOCK_PCLKD_32 (1) | |
| #define ECM_CMT0_CMI0_ENABLE (1) | |
| #define ECM_CMT0_CONST_15_us (0x22) | |
| #define ECM_CMT0_START (1) | |
| #define ECM_CMT0_STOP (0) | |
| #define ECM_CMT_REG_CLEAR (0x0000) | |
| /******************************************************************************* | |
| Typedef definitions | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| Imported global variables and functions (from other files) | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| Exported global variables and functions (to be accessed by other files) | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| Private variables and functions | |
| *******************************************************************************/ | |
| static uint32_t *g_pcmd_reg_adrr[ECM_TYPE_MAX] = | |
| { | |
| (uint32_t *) &ECMM.ECMMPCMD0.LONG, | |
| (uint32_t *) &ECMC.ECMCPCMD0.LONG, | |
| (uint32_t *) &ECM.ECMPCMD1.LONG | |
| }; | |
| /******************************************************************************* | |
| * Function Name : R_ECM_Init | |
| * Description : Initialize ECM function. | |
| * - Clear all error source | |
| * - Clear ERROROUT# pin output to in-active (High) level. | |
| * Arguments : none | |
| * Return Value : none | |
| *******************************************************************************/ | |
| void R_ECM_Init(void) | |
| { | |
| volatile uint8_t result; | |
| /* Clear all error source (ECMESSTC0, ECMESSTC1, ECMESSTC2) */ | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMESSTC0.LONG), 0xDFFFFFF7); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMESSTC1.LONG), 0x000001FF); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMESSTC2.LONG), 0x70000000); | |
| /* Mask all error source (ECMEMK0, ECMEMK1, ECMEMK2) for clearing ERROROUT# */ | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMEMK0.LONG), 0xDFFFFFF7); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMEMK1.LONG), 0x000001FF); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMEMK2.LONG), 0x30000000); | |
| /* Mask ECM maskable, non-maskable interrupt and ECM reset of ECM compare match | |
| error (ECMMICFG2, ECMNMICFG2, ECMIRCFG2) */ | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMMICFG2.LONG), 0x00000000); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMNMICFG2.LONG), 0x00000000); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMIRCFG2.LONG), 0x00000000); | |
| /* Clear ERROROUT# pin output to in-active (High) level */ | |
| result = R_ECM_Write_Reg8(ECM_MASTER, &(ECMM.ECMMECLR.BYTE), 0x01); | |
| result = R_ECM_Write_Reg8(ECM_CHECKER, &(ECMC.ECMCECLR.BYTE), 0x01); | |
| /* Wait 15us for ECM compare error stabilization */ | |
| R_ECM_CompareError_Wait(); | |
| /* Clear ECM compare error (ECMESSTC2) again */ | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMESSTC2.LONG), 0x10000000); | |
| /* Initialize the all error mask settings (ECMEMK0, ECMEMK1, ECMEMK2) */ | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMEMK0.LONG), 0x00000000); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMEMK1.LONG), 0x00000000); | |
| result = R_ECM_Write_Reg32(ECM_COMMON, &(ECM.ECMEMK2.LONG), 0x00000000); | |
| } | |
| /******************************************************************************* | |
| End of function R_ECM_Init | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| * Function Name : R_ECM_CompareError_Wait | |
| * Description : Wait about 15 us for ECM compare error stabilizeation by using CMT0 | |
| * Arguments : none | |
| * Return Value : none | |
| *******************************************************************************/ | |
| void R_ECM_CompareError_Wait(void) | |
| { | |
| /* Enables writing to the registers related to Reset and Low-Power function */ | |
| r_rst_write_enable(); | |
| /* Release from the CMT0 module-stop state */ | |
| MSTP(CMT0) = 0; | |
| /* Disables writing to the registers related to Reset and Low-Power function */ | |
| r_rst_write_disable(); | |
| /* Set CMT0 to 100us interval operation */ | |
| CMT0.CMCR.BIT.CKS = ECM_CMT0_CLOCK_PCLKD_32; // Count clock = PCLKD/32 | |
| CMT0.CMCR.BIT.CMIE = ECM_CMT0_CMI0_ENABLE; // Enable CMI0 interrupt | |
| CMT0.CMCNT = ECM_CMT_REG_CLEAR; // Clear CMCNT counter | |
| CMT0.CMCOR = ECM_CMT0_CONST_15_us; // Set constant value for 15us | |
| /* Set IRQ21(CMI0) for polloing sequence */ | |
| VIC.IEC0.BIT.IEC21 = ICU_IEC_MASK_SET; // Mask IRQ21 interrupt | |
| VIC.PLS0.BIT.PLS21 = ICU_TYPE_EDGE; // Set EDGE type interrupt | |
| VIC.PIC0.BIT.PIC21 = ICU_PIC_EDGE_CLEAR; // Clear interrupt detection edge | |
| /* Enable IRQ interrupt (Clear CPSR.I bit to 0) */ | |
| asm("cpsie i"); // Clear CPSR.I bit to 0 | |
| asm("isb"); // Ensuring Context-changing | |
| /* Start CMT0 count */ | |
| CMT.CMSTR0.BIT.STR0 = ECM_CMT0_START; | |
| /* Wait for 15us (IRQ21 is generated) */ | |
| while ( ! (VIC.RAIS0.BIT.RAI21) ) | |
| { | |
| /* Wait */ | |
| } | |
| /* Stop CMT0 count */ | |
| CMT.CMSTR0.BIT.STR0 = ECM_CMT0_STOP; | |
| /* Initialize CMT0 settings and clear interrupt detection edge */ | |
| CMT0.CMCR.WORD = ECM_CMT_REG_CLEAR; | |
| CMT0.CMCNT = ECM_CMT_REG_CLEAR; | |
| CMT0.CMCOR = ECM_CMT_REG_CLEAR; | |
| CMT.CMSTR0.WORD = ECM_CMT_REG_CLEAR; | |
| VIC.PIC0.BIT.PIC21 = ICU_PIC_EDGE_CLEAR; // Clear interrupt detection edge | |
| /* Disable IRQ interrupt (Set CPSR.I bit to 1) */ | |
| asm("cpsid i"); | |
| asm("isb"); | |
| /* Enables writing to the registers related to Reset and Low-Power function */ | |
| r_rst_write_enable(); | |
| /* Set CMT0 to module-stop state */ | |
| MSTP(CMT0) = 1; | |
| /* Disables writing to the registers related to Reset and Low-Power function */ | |
| r_rst_write_disable(); | |
| } | |
| /******************************************************************************* | |
| End of function R_ECM_CompareError_Wait | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| * Function Name : R_ECM_Write_Reg8 | |
| * Description : Writing the special sequence for 8-bit ECM protected register | |
| * Arguments : reg_type | |
| * The type of ECM register (ECM_MASETR, ECM_CHECKER, ECM_COMMON) | |
| * *reg | |
| * The address of ECM protected register | |
| * value | |
| * The 8-bit value of writing to protected register | |
| * Return Value : none | |
| *******************************************************************************/ | |
| uint8_t R_ECM_Write_Reg8( uint8_t reg_type, volatile unsigned char *reg, uint8_t value) | |
| { | |
| uint8_t result; | |
| volatile uint8_t dummy_8; | |
| volatile uint32_t dummy_32; | |
| /* Special write sequence */ | |
| *g_pcmd_reg_adrr[reg_type] = ECM_COMMAND_KEY; // Write fixed value | |
| dummy_32 = *g_pcmd_reg_adrr[reg_type]; | |
| *reg = value; // Write expected value | |
| *reg = ~value; // Write inversed value of the expected value | |
| *reg = value; // Write expected value | |
| dummy_8 = *reg; | |
| /* Check the ECMPS register whether special sequence is success or failure | |
| result = 0 : Special sequence is success. | |
| = 1 : Special sequence is failure. */ | |
| result = ECM.ECMPS.BYTE; | |
| return result; | |
| } | |
| /******************************************************************************* | |
| End of function R_ECM_Write_Reg8 | |
| *******************************************************************************/ | |
| /******************************************************************************* | |
| * Function Name : R_ECM_Write_Reg32 | |
| * Description : Writing the special sequence for 32-bit ECM protected register | |
| * Arguments : reg_type | |
| * The type of ECM register (ECM_MASETR, ECM_CHECKER, ECM_COMMON) | |
| * *reg | |
| * The address of ECM protected register | |
| * value | |
| * The 32-bit value of writing to protected register | |
| * Return Value : none | |
| *******************************************************************************/ | |
| uint8_t R_ECM_Write_Reg32( uint8_t reg_type, volatile unsigned long *reg, uint32_t value) | |
| { | |
| uint8_t result; | |
| volatile uint32_t dummy_32; | |
| /* Special write sequence */ | |
| *g_pcmd_reg_adrr[reg_type] = ECM_COMMAND_KEY; // Write fixed value | |
| dummy_32 = *g_pcmd_reg_adrr[reg_type]; | |
| *reg = value; // Write expected value | |
| *reg = ~value; // Write inversed value of the expected value | |
| *reg = value; // Write expected value | |
| dummy_32 = *reg; | |
| /* Check the ECMPS register whether special sequence is success or failure | |
| result = 0 : Special sequence is success. | |
| = 1 : Special sequence is failure. */ | |
| result = ECM.ECMPS.BYTE; | |
| return result; | |
| } | |
| /******************************************************************************* | |
| End of function R_ECM_Write_Reg32 | |
| *******************************************************************************/ | |
| /* End of File */ | |