add 04 5x5 led&readme

Author: jd3096-mpy

README.md

@@ -32,17 +32,23 @@ control_board_v1.led_show_bytes_async(bytearray([9, 8, 0, 0, 0]))
 ### Classes
 * control_board_v1.PlayRecordMission
 
-# GPIO
-已知：
-button a ————— GPIO 10
-button b ————— GPIO 20
-button c ————— GPIO 21
-I2C(SC7A20国产三轴) ————— SDA 6 SCL 7
-UART (5x5 led)————— TX 8 RX 9 baudrate=460929
-未知：
-P1
-P2
-I2S???
-
-
+### Examples
+* 01 5X5 LED(OFFICAL METHODS)
+* 02 ACEL
+* 03 BUTTON
+* 04 5X5 LED(WITH SOURCE CODE)
+
+
+# GPIO对应
+已知：  
+button a ————— GPIO 10  
+button b ————— GPIO 20  
+button c ————— GPIO 21  
+I2C(SC7A20国产三轴) ————— SDA 6 SCL 7  
+UART ————— TX 8 RX 9 baudrate=460800
+板子上还有个国产MUC，主要通过UART通信实现音频录制播放、5x5 led的功能  
+未知：  
+P1 ————— GPIO5  
+P2 ————— GPIO4    
+到此alphapi的硬件基本挖掘完毕，通过螺丝柱供电这种方式确实第一次见。  
 TODO

example/01_LED/main.py example/01_LED(OFFICAL METHODS)/main.pyexample/01_LED/main.py renamed to example/01_LED(OFFICAL METHODS)/main.py

@@ -0,0 +1,75 @@
+import machine
+import time
+from machine import SoftI2C, Pin
+
+uart = machine.UART(1, 460966, tx = 8, rx = 9, timeout=200)
+i2c = SoftI2C(scl=Pin(7), sda=Pin(6), freq=400000)
+
+number_map=[
+bytearray([0xf8,0x88,0x88,0x88,0xF8]),
+bytearray([0,0,0xf8,0,0]),
+bytearray([0xb8,0xa8,0xa8,0xa8,0xe8]),
+bytearray([0xa8,0xa8,0xa8,0xa8,0xf8]),
+bytearray([0xe0,0x20,0x20,0x20,0xf8]),
+bytearray([0xe8,0xa8,0xa8,0xa8,0xb8]),
+bytearray([0xf8,0xa8,0xa8,0xa8,0xb8]),
+bytearray([0x80,0x80,0x80,0x80,0xf8]),
+bytearray([0xf8,0xa8,0xa8,0xa8,0xf8]),
+bytearray([0xe0,0xa0,0xa0,0xa0,0xf8]),
+]
+letter_map=[]
+
+def calc_checksum(data : bytearray):
+    sum = 0
+    for i in range(0,len(data)-1):
+        sum+=data[i]
+    return sum&0xff
+
+def uart_write(addr, data:bytearray) -> num:
+    #与国产MCU通信，格式为头帧0x90+地址+数据长度+数据+累加和校验值
+    #如通信成功会返回3bytes数据b'\x91\x08\x05',有时通信会卡死，原因未知，连续写两次则必定成功，奇怪？？？
+    if(len(data)==0):
+        return False
+    byteToWrite = bytearray([0x90])
+    byteToWrite.append(addr)
+    byteToWrite.append(len(data))
+    byteToWrite.extend(data)
+    byteToWrite.append(0)
+    byteToWrite[len(byteToWrite)-1]=calc_checksum(byteToWrite)
+    for i in range(0,2):
+        uart.write(byteToWrite)    
+        ansbytes = uart.read(3)
+        try:
+            if len(ansbytes)==3:
+                return ansbytes[2]
+            else:
+                print("write error: ", ansbytes)  
+                return False
+        except:
+            pass
+
+def led_rect():
+    databytes = bytearray([0xf8,0xf8,0xf8,0x88,0xF8])
+    uart_write(0x08, databytes)
+    return
+    
+def led_array_demo():
+    databytes = bytearray([0xf8,0xf8,0xf8,0xf8,0xf8])
+    for i in range(0,10):
+        for j in range(0,5):
+            databytes[j]=databytes[j]<<1
+            if databytes[j] == 0:
+                databytes[j] = 0x08
+        uart_write(0x08, databytes)
+        time.sleep_ms(100)
+    return
+
+def show_number(n):
+    uart_write(0x08, number_map[n])
+    
+for i in range(0,10):
+    show_number(i)
+    time.sleep(0.5)
+
+
+