五、从0开始卷出一个新项目瑞萨RZN2L之RZT2L BaseProject coremark的移植

感谢来自b站热心帅气的同学分享的RZT2L移植经验总结的md文档
1 需要注意的小点
1.1 使用Flash运行调试前，新板子需要erase
1.2 在线debug，需要修改startup.c
2 coremark工程建立
2.1 工程创建
2.2 src 用户c代码移植
2.3 debug调试
2.4 修改printf 重定向
2.5 修改编译等级
2.6 修改迭代次数
2.7 修改ld文件和system.c
3 小结
3.1 clock_t编译报错问题
3.2 移植coremark的目的个人理解
3.3 尝试FSP V1.30

参照【四、从0开始卷出一个新项目之瑞萨RZN2L软件基础工程构建】 https://www.bilibili.com/video/BV1cQ4y1p7of/?share_source=copy_web&vd_source=0b6b29722ed1b9adf9a9fa82857ec3a0

1 需要注意的小点

1.1 使用Flash运行调试前，新板子需要erase

参照Getting Started with Flexible Software Package手册的附录，下载Jlink, 按着手册进行芯片擦除

1.2 在线debug，需要修改startup.c

参照Getting Started with Flexible Software Package手册的附录，在线debug，还需在starup.c添加 #if 1 // Software loops are only needed when debugging.的代码，如下图所示。

FSP 版本1.2和1.3生成的starup.c有所区别

2 coremark工程建立

使用开发套件自带配件：Jlink-Ob debug调试：J19 State: open，typeC-usb 电脑供电，USB串口线
使用FSPV1.2进行工程配置

2.1 工程创建

可以看视频创建流程，大致差不多，稍微有一点区别，可以参照一下下面的图。

最小工程-闪灯程序--hello world ！for 开发板

RSK FOR RZT2L : 挂载xspi1

选择 SPI1 x1 boot mode

改成800M

定时器配置

串口配置

2.2 src 用户c代码移植

把coremark和下面的hal_entry.c 代码复制到src文件下
hal_entry.c

/***********************************************************************************************************************

Copyright [2020-2022] Renesas Electronics Corporation and/or its affiliates. All Rights Reserved.
This software and documentation are supplied by Renesas Electronics Corporation and/or its affiliates and may only
be used with products of Renesas Electronics Corp. and its affiliates ("Renesas"). No other uses are authorized.
Renesas products are sold pursuant to Renesas terms and conditions of sale. Purchasers are solely responsible for
the selection and use of Renesas products and Renesas assumes no liability. No license, express or implied, to any
intellectual property right is granted by Renesas. This software is protected under all applicable laws, including
copyright laws. Renesas reserves the right to change or discontinue this software and/or this documentation.
THE SOFTWARE AND DOCUMENTATION IS DELIVERED TO YOU "AS IS," AND RENESAS MAKES NO REPRESENTATIONS OR WARRANTIES, AND
TO THE FULLEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW, DISCLAIMS ALL WARRANTIES, WHETHER EXPLICITLY OR IMPLICITLY,
INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT, WITH RESPECT TO THE
SOFTWARE OR DOCUMENTATION. RENESAS SHALL HAVE NO LIABILITY ARISING OUT OF ANY SECURITY VULNERABILITY OR BREACH.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, IN NO EVENT WILL RENESAS BE LIABLE TO YOU IN CONNECTION WITH THE SOFTWARE OR
DOCUMENTATION (OR ANY PERSON OR ENTITY CLAIMING RIGHTS DERIVED FROM YOU) FOR ANY LOSS, DAMAGES, OR CLAIMS WHATSOEVER,
INCLUDING, WITHOUT LIMITATION, ANY DIRECT, CONSEQUENTIAL, SPECIAL, INDIRECT, PUNITIVE, OR INCIDENTAL DAMAGES; ANY
LOST PROFITS, OTHER ECONOMIC DAMAGE, PROPERTY DAMAGE, OR PERSONAL INJURY; AND EVEN IF RENESAS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH LOSS, DAMAGES, CLAIMS OR COSTS.
**********************************************************************************************************************/

#include "hal_data.h"



void R_BSP_WarmStart(bsp_warm_start_event_t event) BSP_PLACE_IN_SECTION(".warm_start");

void user_copy_to_sram (void);

extern bsp_leds_t g_bsp_leds;

extern void atcm_user_init(void);
extern void coremain(void);//BSP_PLACE_IN_SECTION(".atcm");


///rzn2l may be not support segger rtt print, so exclude file SEGGER_RTT_V780c
#ifndef PRINTF
#define PRINTF
#endif
#ifdef PRINTF
#include <stdio.h>
/**
 * notice: g_uart0CB; g_uart0_ctrl
 *
 * e2s:
 * 1.uart0 callback:g_uart0CB
 * 2.FSP-BSP-heap size:0x400
 * 3.-u _printf_float
 * 4.other link void
 *
 * iar:
 * 1.uart0 callback:g_uart0CB
 * 2.FSP-BSP-heap size:0x400
 * 3.libray=full
 * 4.Semihosted=None
 *
 * keil:
 * 1.uart0 callback:g_uart0CB
 * 2.FSP-BSP-heap size:0x400
 */
volatile bool uart_send_complete_flag = false;
void g_uart0CB (uart_callback_args_t * p_args)
{
    if(p_args->event == UART_EVENT_TX_COMPLETE)
    {
        uart_send_complete_flag = true;
    }
}
#if defined __GNUC__ && !defined __clang__
int _write(int fd, char *pBuffer, int size); //??????
int _write(int fd, char *pBuffer, int size)
{
   (void)fd;
   fsp_err_t err = R_SCI_UART_Write(&g_uart0_ctrl, (uint8_t *)pBuffer, (uint32_t)size);
   if(FSP_SUCCESS != err) __BKPT();
   while(uart_send_complete_flag == false);
   uart_send_complete_flag = false;

   return size;
}
#else
int fputc(int ch, FILE *f)
{
   (void)f;
   fsp_err_t err = R_SCI_UART_Write(&g_uart0_ctrl, (uint8_t *)&ch, 1);
   if(FSP_SUCCESS != err) __asm("bkpt 0");
   while(uart_send_complete_flag == false);
   uart_send_complete_flag = false;

   return ch;
}
#endif//#if defined __GNUC__ && !defined __clang__
#endif//PRINTF

extern void func_atcm_bss_init (void);
///
/*******************************************************************************************************************//**
 * @brief  Blinky example application
 *
 * Blinks all leds at a rate of 1 second using the software delay function provided by the BSP.
 *
 **********************************************************************************************************************/
void hal_entry (void)
{
    //R_BSP_SoftwareDelay(100, BSP_DELAY_UNITS_MILLISECONDS);

    /* Define the units to be used with the software delay function */
    const bsp_delay_units_t bsp_delay_units = BSP_DELAY_UNITS_MILLISECONDS;

    /* Set the blink frequency (must be <= bsp_delay_units */
    const uint32_t freq_in_hz = 2;

    /* Calculate the delay in terms of bsp_delay_units */
    const uint32_t delay = bsp_delay_units / freq_in_hz;

    /* LED type structure */
    bsp_leds_t leds = g_bsp_leds;

    /* 中断使能 */
//    __enable_irq();
    __asm volatile ("cpsie i");
    //    __ASM volatile ("cpsie i" : : : "memory");

#ifdef PRINTF
    g_uart0.p_api->open(&g_uart0_ctrl, &g_uart0_cfg);

    g_uart0.p_api->write(&g_uart0_ctrl, "Renesas\n", strlen("Renesas\n"));
    while(!uart_send_complete_flag);
    uart_send_complete_flag = false;
    printf("date:%s\ntime:%s\nfile:%s\nfunc:%s,line:%d\nhello world!\n", __DATE__, __TIME__, __FILE__, __FUNCTION__, __LINE__);

    float PI = 3.1415926;
    printf("PI=%f\n", PI);
#endif//PRINTF


    R_GPT_Open(&g_timer0_ctrl, &g_timer0_cfg);
    R_GPT_Start(&g_timer0_ctrl);
    R_GPT_Enable(&g_timer0_ctrl);

    printf("start coremain!!!\r\n");

    /* If this board has no LEDs then trap here */
    if (0 == leds.led_count)
    {
        while (1)
        {
            ;                          // There are no LEDs on this board
        }
    }

    /* This code uses BSP IO functions to show how it is used.*/
    /* Turn off LEDs */
    for (uint32_t i = 0; i < leds.led_count; i++)
    {
        R_BSP_PinClear(BSP_IO_REGION_SAFE, (bsp_io_port_pin_t) leds.p_leds[i]);
    }

#if FSP_XSPI1_BOOT_SRAM_ATCM//only use fsp_xspi0_boot_SRAM_ATCM.ld
    //first, change FSP_XSPI0_BOOT_SRAM_ATCM in project property - symbol
    //second，change .ld in project property cross arm c linker - general
    atcm_user_init();

    printf("use fsp_xspi1_boot_SRAM_ATCM.ld!!!\r\n");
#else
    printf("use fsp_xspi1_boot.ld or use fsp_xspi1_boot_SRAM_MIRROR.ld!!!\r\n");
#endif

    coremain();

    //default 200Mhz，modify fsp-clock  CPUOCLK Mul:ICLKx1 -> CPUOCLK Mul:ICLKx2
    uint32_t freq_hz = R_FSP_SystemClockHzGet(FSP_PRIV_CLOCK_CPU0);
    printf("FSP_PRIV_CLOCK_CPU0=%ld\r\n", freq_hz);


    while (1)
    {
        printf("running!!!\r\n");
        for (uint32_t i = 0; i < leds.led_count; i++)
        {
          R_BSP_PinToggle(BSP_IO_REGION_SAFE, (bsp_io_port_pin_t) leds.p_leds[i]);
        }
        R_BSP_SoftwareDelay(1000, BSP_DELAY_UNITS_MILLISECONDS);
    }

}



/*******************************************************************************************************************//**
 * This function is called at various points during the startup process.  This implementation uses the event that is
 * called right before main() to set up the pins.
 *
 * @param[in]  event    Where at in the start up process the code is currently at
 **********************************************************************************************************************/
void R_BSP_WarmStart (bsp_warm_start_event_t event)
{
    if (BSP_WARM_START_POST_C == event)
    {
        /* C runtime environment and system clocks are setup. */

        /* Configure pins. */
        R_IOPORT_Open(&g_ioport_ctrl, &g_bsp_pin_cfg);

    }
}

/*
 * g_timer0CB
 * rzn2l core R52 havenot systick, so init g_timer0 cnt
 */
extern volatile clock_t cnt;
void g_timer0CB(timer_callback_args_t *p_args)
{
    if (TIMER_EVENT_CYCLE_END == p_args->event)
    {
        cnt++;
    }
}

但不知道这里clock_t就是说未定义??其实是有定义的，，，
该问题3.1节有提到

2.3 debug调试

startup.c line:380加入

>#if 1 // xpsi boot debug must software_loop+software_loop2.Software loops are only needed when debugging.
>     __asm volatile (
>         " mov r0, #0 \n"
>         " movw r1, #0xf07f \n"
>         " movt r1, #0x2fa \n"
>         "software_loop: \n"
>         " adds r0, #1 \n"
>         " cmp r0, r1 \n"
>         " bne software_loop \n"
>         ::: "memory");
>#endif

2.4 修改printf 重定向

2.5 修改编译等级

2.6 修改迭代次数

20000--->30000

2.7 修改ld文件和system.c

ld文件
SRAM首选和ATCM次选的baseproject

system.c

3 小结

非常感谢陈工的视频教程加上亲自的远程指导，废了很大的劲才能跑通，自己主要吃了没有文化的亏；其中还有一些细小问题未能解释,很多现象只能表述，还不能解释背后的原理，所以疑惑也较多；

3.1 clock_t编译报错问题

对于clock_t编译报错问题，选择下图的toolchain，可以解决，但为什么，很难解释。。从报错的提示看有提到toolchain 所以更换了。

3.2 移植coremark的目的个人理解

coremark文件夹的源码在atcm运行，其他源码都是sram运行
移植coremark并且SRAM首选和ATCM次选的baseproject的目的，是让coremark代码选择在ATM上快速运行，
对于我后续移植开发，如果需要要求执行速度快的代码，也需要和修改coremark的system.c一样去修改，其他的应用代码移植过来直接默认在SRAM上。这一块如何去学习到灵活自主的修改能力？目前对于ld文件、system.c文件理解不是很透彻，还是简单的搬运！！