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-/***********************************************************************************************************************
-* 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) 2012 Renesas Electronics Corporation. All rights reserved.
-***********************************************************************************************************************/
-/***********************************************************************************************************************
-* File Name : resetprg.c
-* Device(s) : RX63x
-* Description : Defines post-reset routines that are used to configure the MCU prior to the main program starting.
-* This is were the program counter starts on power-up or reset.
-***********************************************************************************************************************/
-/***********************************************************************************************************************
-* History : DD.MM.YYYY Version Description
-* : 26.10.2011 1.00 First Release
-* : 13.03.2012 1.10 Stack sizes are now defined in r_bsp_config.h. Because of this the #include for
-* stacksct.h was removed. Settings for SCKCR are now set in r_bsp_config.h and used here
-* to setup clocks based on user settings.
-***********************************************************************************************************************/
-
-/***********************************************************************************************************************
-Includes <System Includes> , "Project Includes"
-***********************************************************************************************************************/
-/* Defines machine level functions used in this file */
-#include <machine.h>
-/* Defines MCU configuration functions used in this file */
-#include <_h_c_lib.h>
-/* Defines standard variable types used in this file */
-#include <stdbool.h>
-#include <stdint.h>
-
-/* This macro is here so that the stack will be declared here. This is used to prevent multiplication of stack size. */
-#define BSP_DECLARE_STACK
-/* Define the target platform */
-#include "platform.h"
-
-/***********************************************************************************************************************
-Macro definitions
-***********************************************************************************************************************/
-#define PSW_init (0x00030000)
-#define FPSW_init (0x00000100)
-
-/***********************************************************************************************************************
-Pre-processor Directives
-***********************************************************************************************************************/
-/* Declare the contents of the function 'Change_PSW_PM_to_UserMode' as
- assembler to the compiler */
-#pragma inline_asm Change_PSW_PM_to_UserMode
-
-/* Set this as the entry point from a power-on reset */
-#pragma entry PowerON_Reset_PC
-
-/***********************************************************************************************************************
-External function Prototypes
-***********************************************************************************************************************/
-/* Functions to setup I/O library */
-extern void _INIT_IOLIB(void);
-extern void _CLOSEALL(void);
-
-/***********************************************************************************************************************
-Private global variables and functions
-***********************************************************************************************************************/
-/* Power-on reset function declaration */
-void PowerON_Reset_PC(void);
-
-#if RUN_IN_USER_MODE==1
- #if __RENESAS_VERSION__ < 0x01010000
- /* MCU usermode switcher function declaration */
- static void Change_PSW_PM_to_UserMode(void);
- #endif
-#endif
-
-/* Main program function delcaration */
-void main(void);
-static void operating_frequency_set(void);
-
-/***********************************************************************************************************************
-* Function name: PowerON_Reset_PC
-* Description : This function is the MCU's entry point from a power-on reset.
-* The following steps are taken in the startup code:
-* 1. The User Stack Pointer (USP) and Interrupt Stack Pointer (ISP) are both set immediately after entry
-* to this function. The USP and ISP stack sizes are set in the file stacksct.h.
-* Default sizes are USP=4K and ISP=1K.
-* 2. The interrupt vector base register is set to point to the beginning of the relocatable interrupt
-* vector table.
-* 3. The MCU is setup for floating point operations by setting the initial value of the Floating Point
-* Status Word (FPSW).
-* 4. The MCU operating frequency is set by configuring the Clock Generation Circuit (CGC) in
-* operating_frequency_set.
-* 5. Calls are made to functions to setup the C runtime environment which involves initializing all
-* initialed data, zeroing all uninitialized variables, and configuring STDIO if used
-* (calls to _INITSCT and _INIT_IOLIB).
-* 6. Board-specific hardware setup, including configuring I/O pins on the MCU, in hardware_setup.
-* 7. Global interrupts are enabled by setting the I bit in the Program Status Word (PSW), and the stack
-* is switched from the ISP to the USP. The initial Interrupt Priority Level is set to zero, enabling
-* any interrupts with a priority greater than zero to be serviced.
-* 8. The processor is optionally switched to user mode. To run in user mode, set the macro
-* RUN_IN_USER_MODE above to a 1.
-* 9. The bus error interrupt is enabled to catch any accesses to invalid or reserved areas of memory.
-*
-* Once this initialization is complete, the user's main() function is called. It should not return.
-* Arguments : none
-* Return value : none
-***********************************************************************************************************************/
-void PowerON_Reset_PC(void)
-{
- /* Stack pointers are setup prior to calling this function - see comments above */
-
- /* Initialise the MCU processor word */
-#if __RENESAS_VERSION__ >= 0x01010000
- set_intb((void *)__sectop("C$VECT"));
-#else
- set_intb((unsigned long)__sectop("C$VECT"));
-#endif
-
- /* Initialize FPSW for floating-point operations */
-#ifdef __ROZ
-#define _ROUND 0x00000001 /* Let FPSW RMbits=01 (round to zero) */
-#else
-#define _ROUND 0x00000000 /* Let FPSW RMbits=00 (round to nearest) */
-#endif
-#ifdef __DOFF
-#define _DENOM 0x00000100 /* Let FPSW DNbit=1 (denormal as zero) */
-#else
-#define _DENOM 0x00000000 /* Let FPSW DNbit=0 (denormal as is) */
-#endif
- set_fpsw(FPSW_init | _ROUND | _DENOM);
-
- /* Switch to high-speed operation */
- operating_frequency_set();
-
- /* Initialize C runtime environment */
- _INITSCT();
-
- /* Comment this out if not using I/O lib
- _INIT_IOLIB(); */
-
- /* Configure the MCU and YRDK hardware */
- hardware_setup();
-
- /* Change the MCU's usermode from supervisor to user */
- nop();
- set_psw(PSW_init);
-#if RUN_IN_USER_MODE==1
- /* Use chg_pmusr() intrinsic if possible. */
- #if __RENESAS_VERSION__ >= 0x01010000
- chg_pmusr() ;
- #else
- Change_PSW_PM_to_UserMode();
- #endif
-#endif
-
-
- /* Enable the bus error interrupt to catch accesses to illegal/reserved areas of memory */
- /* The ISR for this interrupt can be found in vecttbl.c in the function "bus_error_isr" */
- /* Clear any pending interrupts */
- IR(BSC,BUSERR) = 0;
- /* Make this the highest priority interrupt (adjust as necessary for your application */
- IPR(BSC,BUSERR) = 0x0F;
- /* Enable the interrupt in the ICU*/
- IEN(BSC,BUSERR) = 1;
- /* Enable illegal address interrupt in the BSC */
- BSC.BEREN.BIT.IGAEN = 1;
-
- /* Call the main program function (should not return) */
- main();
-
- /* Comment this out if not using I/O lib - cleans up open files */
- _CLOSEALL();
-
- while(1)
- {
- /* Infinite loop. Put a breakpoint here if you want to catch an exit of main(). */
- }
-}
-
-/***********************************************************************************************************************
-* Function name: operating_frequency_set
-* Description : Configures the clock settings for each of the device clocks
-* Arguments : none
-* Return value : none
-***********************************************************************************************************************/
-void operating_frequency_set(void)
-{
- /* Used for constructing value to write to SCKCR register. */
- uint32_t temp_clock = 0;
-
- /*
- Clock Description Frequency
- ----------------------------------------
- Input Clock Frequency............ 12 MHz
- PLL frequency (x16).............. 192 MHz
- Internal Clock Frequency......... 96 MHz
- Peripheral Clock Frequency....... 48 MHz
- USB Clock Frequency.............. 48 MHz
- External Bus Clock Frequency..... 24 MHz */
-
- volatile unsigned int i;
-
- /* Protect off. */
- SYSTEM.PRCR.WORD = 0xA50B;
-
- /* Uncomment if not using sub-clock */
- //SYSTEM.SOSCCR.BYTE = 0x01; /* stop sub-clock */
- SYSTEM.SOSCCR.BYTE = 0x00; /* Enable sub-clock for RTC */
-
- /* Wait 131,072 cycles * 12 MHz = 10.9 ms */
- SYSTEM.MOSCWTCR.BYTE = 0x0D;
-
- /* PLL wait is 4,194,304 cycles (default) * 192 MHz (12 MHz * 16) = 20.1 ms*/
- SYSTEM.PLLWTCR.BYTE = 0x0F;
-
- /* Set PLL Input Divisor. */
- SYSTEM.PLLCR.BIT.PLIDIV = PLL_DIV >> 1;
-
- /* Set PLL Multiplier. */
- SYSTEM.PLLCR.BIT.STC = PLL_MUL - 1;
-
- /* EXTAL ON */
- SYSTEM.MOSCCR.BYTE = 0x00;
-
- /* PLL ON */
- SYSTEM.PLLCR2.BYTE = 0x00;
-
- for(i = 0;i< 0x168;i++)
- {
- /* Wait over 12ms */
- nop() ;
- }
-
- /* Figure out setting for FCK bits. */
-#if FCK_DIV == 1
- /* Do nothing since FCK bits should be 0. */
-#elif FCK_DIV == 2
- temp_clock |= 0x10000000;
-#elif FCK_DIV == 4
- temp_clock |= 0x20000000;
-#elif FCK_DIV == 8
- temp_clock |= 0x30000000;
-#elif FCK_DIV == 16
- temp_clock |= 0x40000000;
-#elif FCK_DIV == 32
- temp_clock |= 0x50000000;
-#elif FCK_DIV == 64
- temp_clock |= 0x60000000;
-#else
- #error "Error! Invalid setting for FCK_DIV in r_bsp_config.h"
-#endif
-
- /* Figure out setting for ICK bits. */
-#if ICK_DIV == 1
- /* Do nothing since ICK bits should be 0. */
-#elif ICK_DIV == 2
- temp_clock |= 0x01000000;
-#elif ICK_DIV == 4
- temp_clock |= 0x02000000;
-#elif ICK_DIV == 8
- temp_clock |= 0x03000000;
-#elif ICK_DIV == 16
- temp_clock |= 0x04000000;
-#elif ICK_DIV == 32
- temp_clock |= 0x05000000;
-#elif ICK_DIV == 64
- temp_clock |= 0x06000000;
-#else
- #error "Error! Invalid setting for ICK_DIV in r_bsp_config.h"
-#endif
-
- /* SDCLK Pin Output and BCLK Pin Output are disabled by default. */
- temp_clock |= 0x00C00000;
-
- /* Figure out setting for BCK bits. */
-#if BCK_DIV == 1
- /* Do nothing since BCK bits should be 0. */
-#elif BCK_DIV == 2
- temp_clock |= 0x00010000;
-#elif BCK_DIV == 4
- temp_clock |= 0x00020000;
-#elif BCK_DIV == 8
- temp_clock |= 0x00030000;
-#elif BCK_DIV == 16
- temp_clock |= 0x00040000;
-#elif BCK_DIV == 32
- temp_clock |= 0x00050000;
-#elif BCK_DIV == 64
- temp_clock |= 0x00060000;
-#else
- #error "Error! Invalid setting for BCK_DIV in r_bsp_config.h"
-#endif
-
- /* Figure out setting for PCKA bits. */
-#if PCKA_DIV == 1
- /* Do nothing since PCKA bits should be 0. */
-#elif PCKA_DIV == 2
- temp_clock |= 0x00001000;
-#elif PCKA_DIV == 4
- temp_clock |= 0x00002000;
-#elif PCKA_DIV == 8
- temp_clock |= 0x00003000;
-#elif PCKA_DIV == 16
- temp_clock |= 0x00004000;
-#elif PCKA_DIV == 32
- temp_clock |= 0x00005000;
-#elif PCKA_DIV == 64
- temp_clock |= 0x00006000;
-#else
- #error "Error! Invalid setting for PCKA_DIV in r_bsp_config.h"
-#endif
-
- /* Figure out setting for PCKB bits. */
-#if PCKB_DIV == 1
- /* Do nothing since PCKB bits should be 0. */
-#elif PCKB_DIV == 2
- temp_clock |= 0x00000100;
-#elif PCKB_DIV == 4
- temp_clock |= 0x00000200;
-#elif PCKB_DIV == 8
- temp_clock |= 0x00000300;
-#elif PCKB_DIV == 16
- temp_clock |= 0x00000400;
-#elif PCKB_DIV == 32
- temp_clock |= 0x00000500;
-#elif PCKB_DIV == 64
- temp_clock |= 0x00000600;
-#else
- #error "Error! Invalid setting for PCKB_DIV in r_bsp_config.h"
-#endif
-
- /* Bottom byte of SCKCR register must be set to 0x11 */
- temp_clock |= 0x00000011;
-
- /* Set SCKCR register. */
- SYSTEM.SCKCR.LONG = temp_clock;
-
- /* Re-init temp_clock to use to set SCKCR2. */
- temp_clock = 0;
-
- /* Figure out setting for IEBCK bits. */
-#if IEBCK_DIV == 2
- temp_clock |= 0x00000001;
-#elif IEBCK_DIV == 4
- temp_clock |= 0x00000002;
-#elif IEBCK_DIV == 6
- temp_clock |= 0x0000000C;
-#elif IEBCK_DIV == 8
- temp_clock |= 0x00000003;
-#elif IEBCK_DIV == 16
- temp_clock |= 0x00000004;
-#elif IEBCK_DIV == 32
- temp_clock |= 0x00000005;
-#elif IEBCK_DIV == 64
- temp_clock |= 0x00000006;
-#else
- #error "Error! Invalid setting for IEBCK_DIV in r_bsp_config.h"
-#endif
-
- /* Figure out setting for UCK bits. */
-#if UCK_DIV == 3
- temp_clock |= 0x00000020;
-#elif UCK_DIV == 4
- temp_clock |= 0x00000030;
-#else
- #error "Error! Invalid setting for UCK_DIV in r_bsp_config.h"
-#endif
-
- /* Set SCKCR2 register. */
- SYSTEM.SCKCR2.WORD = (uint16_t)temp_clock;
-
- /* Choose clock source. Default for r_bsp_config.h is PLL. */
- SYSTEM.SCKCR3.WORD = ((uint16_t)CLOCK_SOURCE) << 8;
-
- /* Protect on. */
- SYSTEM.PRCR.WORD = 0xA500;
-}
-
-/***********************************************************************************************************************
-* Function name: Change_PSW_PM_to_UserMode
-* Description : Assembler function, used to change the MCU's usermode from supervisor to user.
-* Arguments : none
-* Return value : none
-***********************************************************************************************************************/
-#if RUN_IN_USER_MODE==1
- #if __RENESAS_VERSION__ < 0x01010000
-static void Change_PSW_PM_to_UserMode(void)
-{
- MVFC PSW,R1
- OR #00100000h,R1
- PUSH.L R1
- MVFC PC,R1
- ADD #10,R1
- PUSH.L R1
- RTE
- NOP
- NOP
-}
- #endif
-#endif \ No newline at end of file
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