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/*
* Copyright (c) 2022-2024, Xiaohua Semiconductor Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2024-12-30 CDT first version
*/
/*
* 程序清单：SDRAM 设备使用例程，例程导出了sdram_sample命令到控制终端
* 命令调用格式：sdram_sample
* 程序功能：以8/16/32bit方式分别对整个SDRAM存储空间进行写和读操作，比较数据是否一致
*
* 注意:
* F4A0/F4A2/F467: 修改函数SystemClock_Config，调用函数CLK_SetClockDiv参数，CLK_EXCLK_DIV2改为CLK_EXCLK_DIV8(EXCLK: 30MHz);
*
* menuconfig:
* Hardware Drivers Config ---> Onboard Peripheral Drivers ----> Enable EXMC ----> Using SDRAM or NAND ----> Using SDRAM
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#if defined(BSP_USING_EXMC) && defined(BSP_USING_SDRAM)
#include "sdram_port.h"
static rt_err_t sdram_8bit_test(void)
{
rt_uint32_t i;
rt_uint32_t start_time;
rt_uint32_t time_cast;
const char data_width = 1;
rt_uint8_t data = 0;
rt_err_t err = RT_EOK;
rt_kprintf("\r\n************************* %s *************************\r\n", __func__);
/* write data */
rt_kprintf("writing the 0x%08X bytes data, waiting....\r\n", SDRAM_SIZE);
start_time = rt_tick_get();
for (i = 0; i < SDRAM_SIZE / data_width; i++)
{
*(__IO uint8_t *)(SDRAM_BANK_ADDR + i * data_width) = (uint8_t)(i % 100);
}
time_cast = rt_tick_get() - start_time;
rt_kprintf("write data success, total time: %d.%03dS.\r\n", time_cast / RT_TICK_PER_SECOND,
time_cast % RT_TICK_PER_SECOND / ((RT_TICK_PER_SECOND * 1 + 999) / 1000));
/* read data */
rt_kprintf("start reading and verifying data, waiting....\r\n");
for (i = 0; i < SDRAM_SIZE / data_width; i++)
{
data = *(__IO uint8_t *)(SDRAM_BANK_ADDR + i * data_width);
if (data != i % 100)
{
err = -RT_ERROR;
rt_kprintf("SDRAM test failed!\r\n");
break;
}
}
if (i >= SDRAM_SIZE / data_width)
{
rt_kprintf("SDRAM test success!\r\n");
}
return err;
}
static rt_err_t sdram_16bit_test(void)
{
rt_uint32_t i;
rt_uint32_t start_time;
rt_uint32_t time_cast;
const char data_width = 2;
rt_uint16_t data = 0;
rt_err_t err = RT_EOK;
rt_kprintf("\r\n************************* %s *************************\r\n", __func__);
/* write data */
rt_kprintf("writing the 0x%08X haflword data, waiting....\r\n", SDRAM_SIZE / data_width);
start_time = rt_tick_get();
for (i = 0; i < SDRAM_SIZE / data_width; i++)
{
*(__IO uint16_t *)(SDRAM_BANK_ADDR + i * data_width) = (uint16_t)(i % 1000);
}
time_cast = rt_tick_get() - start_time;
rt_kprintf("write data success, total time: %d.%03dS.\r\n", time_cast / RT_TICK_PER_SECOND,
time_cast % RT_TICK_PER_SECOND / ((RT_TICK_PER_SECOND * 1 + 999) / 1000));
/* read data */
rt_kprintf("start reading and verifying data, waiting....\r\n");
for (i = 0; i < SDRAM_SIZE / data_width; i++)
{
data = *(__IO uint16_t *)(SDRAM_BANK_ADDR + i * data_width);
if (data != i % 1000)
{
err = -RT_ERROR;
rt_kprintf("SDRAM test failed!\r\n");
break;
}
}
if (i >= SDRAM_SIZE / data_width)
{
rt_kprintf("SDRAM test success!\r\n");
}
return err;
}
static rt_err_t sdram_32bit_test(void)
{
rt_uint32_t i;
rt_uint32_t start_time;
rt_uint32_t time_cast;
const char data_width = 4;
rt_uint32_t data = 0;
rt_err_t err = RT_EOK;
rt_kprintf("\r\n************************* %s *************************\r\n", __func__);
/* write data */
rt_kprintf("writing the 0x%08X bytes data, waiting....\r\n", SDRAM_SIZE / data_width);
start_time = rt_tick_get();
for (i = 0; i < SDRAM_SIZE / data_width; i++)
{
*(__IO uint32_t *)(SDRAM_BANK_ADDR + i * data_width) = (uint32_t)(i % 10000);
}
time_cast = rt_tick_get() - start_time;
rt_kprintf("write data success, total time: %d.%03dS.\r\n", time_cast / RT_TICK_PER_SECOND,
time_cast % RT_TICK_PER_SECOND / ((RT_TICK_PER_SECOND * 1 + 999) / 1000));
/* read data */
rt_kprintf("start reading and verifying data, waiting....\r\n");
for (i = 0; i < SDRAM_SIZE / data_width; i++)
{
data = *(__IO uint32_t *)(SDRAM_BANK_ADDR + i * data_width);
if (data != i % 10000)
{
err = -RT_ERROR;
rt_kprintf("SDRAM test failed!\r\n");
break;
}
}
if (i >= SDRAM_SIZE / data_width)
{
rt_kprintf("SDRAM test success!\r\n");
}
return err;
}
static void sdram_thread_entry(void *parameter)
{
while (1)
{
sdram_8bit_test();
rt_thread_mdelay(1000);
sdram_16bit_test();
rt_thread_mdelay(1000);
sdram_32bit_test();
rt_thread_mdelay(1000);
}
}
static void sdram_sample(int argc, char *argv[])
{
rt_thread_t thread = rt_thread_create("sdram", sdram_thread_entry, RT_NULL, 2048, 15, 10);
if (thread != RT_NULL)
{
rt_thread_startup(thread);
}
}
MSH_CMD_EXPORT(sdram_sample, sdram sample);
#endif
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