HPM6750EVKMINI開發(fā)板生成coremark和FreeRTOS工程

有了這么高的性能，可以寫比較復(fù)雜的計(jì)算或者控制程序了。

3.生成FreeRTOS工程

有了高性能還不夠，需要加上RTOS，高性能才能被充分利用。仍然借助SDK例子。

start_cmd.cmd進(jìn)入\sdk_env_v0.11.0\hpm_sdk\samples\rtos

> generate_project -b hpm6750evkmini -t flash_xip

4.代碼分析

使用使用SEGGER Embedded Studio打開，并對代碼進(jìn)行簡單修改。freertos建立task，運(yùn)行task代碼分析不再贅述。

#include "FreeRTOS.h"
#include "task.h"


#include 
#include "board.h"
#include "hpm_gpio_drv.h"

#define task1_PRIORITY    (configMAX_PRIORITIES - 5U)
#define task2_PRIORITY    (configMAX_PRIORITIES - 4U)

volatile bool led_on;

static void task1(void *pvParameters)
{
    for (;;) {

        printf("LED is %s.\n", led_on ? "on" : "off");
        vTaskDelay(1000);
    }
}

static void task2(void *pvParameters)
{
    for (;;) {

        gpio_toggle_pin(BOARD_LED_GPIO_CTRL, BOARD_LED_GPIO_INDEX, BOARD_LED_GPIO_PIN);
        printf("task2: Toggle the led pin level\n");
        led_on = !led_on;
        vTaskDelay(1000);
    }
}

int main(void)
{
    board_init();
    board_init_gpio_pins();

    gpio_set_pin_output(BOARD_LED_GPIO_CTRL, BOARD_LED_GPIO_INDEX, BOARD_LED_GPIO_PIN);
    gpio_write_pin(BOARD_LED_GPIO_CTRL, BOARD_LED_GPIO_INDEX, BOARD_LED_GPIO_PIN, BOARD_LED_ON_LEVEL);

    led_on = true;

    if (xTaskCreate(task1, "task1", configMINIMAL_STACK_SIZE + 256U, NULL, task1_PRIORITY, NULL) != pdPASS) {
        printf("Task1 creation failed!.\n");
        for (;;) {
            ;
        }
    }
    if (xTaskCreate(task2, "task2", configMINIMAL_STACK_SIZE + 256U, NULL, task2_PRIORITY, NULL) != pdPASS) {
        printf("Task2 creation failed!.\n");
        for (;;) {
            ;
        }
    }
    vTaskStartScheduler();
    for (;;) {
        ;
    }
    return 0;
}

這里順便分析一下gpio的初始化方法：

/**************************************************************
	主要分析一下main函數(shù)中的gpio初始化函數(shù)
***************************************************************/
board_init_gpio_pins();

/**************************************************************
	函數(shù)原型在board.c中定義
***************************************************************/
void board_init_gpio_pins(void)
{
    init_gpio_pins();
}
//borad.c中定義
void init_gpio_pins(void)
{
    uint32_t pad_ctl = IOC_PAD_PAD_CTL_PE_SET(1) | IOC_PAD_PAD_CTL_PS_SET(1);

    /* Green LED*/
    HPM_IOC->PAD[IOC_PAD_PB18].FUNC_CTL = IOC_PB18_FUNC_CTL_GPIO_B_18;
    HPM_IOC->PAD[IOC_PAD_PB18].PAD_CTL = pad_ctl;

}

/**************************************************************
	寄存器配置宏命令
***************************************************************/
/*
 * PS (RW)
 *
 * pull select
 * 0: pull down
 * 1: pull up
 */
#define IOC_PAD_PAD_CTL_PS_MASK (0x800U)
#define IOC_PAD_PAD_CTL_PS_SHIFT (11U)
#define IOC_PAD_PAD_CTL_PS_SET(x) (((uint32_t)(x) << IOC_PAD_PAD_CTL_PS_SHIFT) & IOC_PAD_PAD_CTL_PS_MASK)
#define IOC_PAD_PAD_CTL_PS_GET(x) (((uint32_t)(x) & IOC_PAD_PAD_CTL_PS_MASK) >> IOC_PAD_PAD_CTL_PS_SHIFT)

/*
 * PE (RW)
 *
 * pull enable
 * 0: pull disable
 * 1: pull enable
 */
#define IOC_PAD_PAD_CTL_PE_MASK (0x10U)
#define IOC_PAD_PAD_CTL_PE_SHIFT (4U)
#define IOC_PAD_PAD_CTL_PE_SET(x) (((uint32_t)(x) << IOC_PAD_PAD_CTL_PE_SHIFT) & IOC_PAD_PAD_CTL_PE_MASK)
#define IOC_PAD_PAD_CTL_PE_GET(x) (((uint32_t)(x) & IOC_PAD_PAD_CTL_PE_MASK) >> IOC_PAD_PAD_CTL_PE_SHIFT)

/**************************************************************
	寄存器地址
***************************************************************/
/* IOC base address */
#define HPM_IOC_BASE (0xF4040000UL)
/* IOC base pointer */
#define HPM_IOC ((IOC_Type *) HPM_IOC_BASE)

/**************************************************************
	寄存器結(jié)構(gòu)體定義
***************************************************************/
typedef struct {
    struct {
        __RW uint32_t FUNC_CTL;                /* 0x0: ALT SELECT */
        __RW uint32_t PAD_CTL;                 /* 0x4: PAD SETTINGS */
    } PAD[492];
} IOC_Type;

/**************************************************************
	gpio復(fù)用定義
***************************************************************/
/* IOC_PB18_FUNC_CTL function mux definitions */
#define IOC_PB18_FUNC_CTL_GPIO_B_18            IOC_PAD_FUNC_CTL_ALT_SELECT_SET(0)
#define IOC_PB18_FUNC_CTL_UART1_CTS            IOC_PAD_FUNC_CTL_ALT_SELECT_SET(3)
#define IOC_PB18_FUNC_CTL_CAN1_RXD             IOC_PAD_FUNC_CTL_ALT_SELECT_SET(7)
#define IOC_PB18_FUNC_CTL_DAOL_N               IOC_PAD_FUNC_CTL_ALT_SELECT_SET(10)
#define IOC_PB18_FUNC_CTL_DRAM_DQ_25           IOC_PAD_FUNC_CTL_ALT_SELECT_SET(12)
#define IOC_PB18_FUNC_CTL_PWM1_P_1             IOC_PAD_FUNC_CTL_ALT_SELECT_SET(16)
#define IOC_PB18_FUNC_CTL_XPI_SLV_ADQ_31       IOC_PAD_FUNC_CTL_ALT_SELECT_SET(30)

可見，risc-v處理器的寄存器配置套路是非常清楚的，和arm思路相同，步驟大同小異~~~~~

使用ide進(jìn)行debug運(yùn)行上述代碼，截圖如下：

審核編輯：湯梓紅