[APM32F4] 【技术分享】玩点不一样的，APM32F411通过SWD输出数据波形！

# APM32F411 GPIOE寄存器的基地址（根据参考手册确定）

GPIOE_BASE = 0x40021000

# GPIOE 输出数据寄存器的偏移量（根据参考手册确定）

GPIOE_ODR_OFFSET = 0x14

# GPIOE 输出数据寄存器地址

GPIOE_ODR = GPIOE_BASE + GPIOE_ODR_OFFSET

# 读取的时间间隔

READ_INTERVAL = 0.1  # 单位秒

MAX_POINTS = 40  # max number of points to display at once

# 更新波形函数

def update_line(frame):

    # 使用PyOCD连接目标设备

    with ConnectHelper.session_with_chosen_probe(unique_id=TARGET_DEVICE_SERIAL_NUMBER) as session:

        board = session.board

        target = board.target

        gpioe_odr_val = target.read32(GPIOE_ODR)

        pe5_state = (gpioe_odr_val >> 5) & 0x1

        pe6_state = (gpioe_odr_val >> 6) & 0x1

        

        # 更新状态

        pin_states['PE5'].append(pe5_state)

        pin_states['PE6'].append(pe6_state)

        

        # 更新时间点

        current_time = time.time() - start_time

        time_points.append(current_time)

        

        # 更新波形图

        lines_pe5.set_data(time_points, pin_states['PE5'])

        lines_pe6.set_data(time_points, pin_states['PE6'])

        

        # 移动时间轴

        if len(time_points) == MAX_POINTS:

            ax.set_xlim(time_points[0], time_points[-1])

            

        return lines_pe5, lines_pe6

import math



# 定义波形函数

def wave1(x):

    return int(500 * math.sin(x / 100) + 500)



def wave2(x):

    return int(200 * math.sin(x / 100) + 500)



# 设置参数

points = 628



# 计算波形点并格式化为字符串

wave1_points = ', '.join(f'{wave1(x)}' for x in range(points))

wave2_points = ', '.join(f'{wave2(x)}' for x in range(points))



wave1_array_str = f"data1[628] = {{{wave1_points}}};\n"

wave2_array_str = f"data2[628] = {{{wave2_points}}};\n"



# 写入到文件

filename = 'E:/03_Work/00_Notes/APM32F4/APM32F411_python_pyocd_Graphic_drawing/code/wave_points.txt'

with open(filename, 'w') as file:

    file.write(wave1_array_str)

    file.write(wave2_array_str)



print(f"The wave points have been written to {filename}")

const uint32_t data1[628] = {500, 504, ...}

const uint32_t data2[628] = {500, 501, ...}



uint32_t w_data[2] __attribute__((section(".ARM.__at_0x20000000")));



...

...



while (1)

    {

        /* Precise Delay 1ms */

        SysTick_Delay_ms(20);

  

        w_data[0] = data1[i];

        w_data[1] = data2[i];



        i++;

        if (i >= 628)

        {

            i = 0;

        }

    }