RT-Thread MicroPython STM32F4-DISCOVERY开发板固件

发布于 2018-04-20 16:27:02 浏览：5548 订阅该版

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* 本帖最后由 Summer_gift 于 2018-5-5 11:06 编辑 *

## STM32F4DISCOVERY

![1524128744818.png](/uploads/201804/20/162621ynaabwlsezwag943.png)

### Pin

| Pin 设备引脚号 | 开发板引脚名 | 功能 |
| -------------- | ------------ | -------------- |
|     62       |       PD15     | LED      |
|     23     |      PA0      | KEY      |

- 示例

```python
from machine import Pin
led = Pin(("LED1", 62), Pin.OUT_PP)
key = Pin(("KEY", 23), Pin.IN, Pin.PULL_DOWN) 
while True:
    if key.value():
        led.value(0)
    else:
        led.value(1)
```

### I2C

| Pin 设备引脚号 | 开发板引脚名 | 功能 |
| -------------- | ------------ | -------------- |
|     58       |      PD11    | SCL     |
|     59     |      PD12      | SDA      |

- 示例

```python
>>> from machine import Pin, I2C
>>> clk = Pin(("clk", 58), Pin.OUT_OD)    
>>> sda = Pin(("sda", 59), Pin.OUT_OD)   
>>> i2c = I2C(-1, clk, sda, freq=100000) 
>>> i2c.scan()
[81]
>>> i2c.writeto(0x51,b'\x05')
1
>>> i2c.readfrom(0x51, 2)
b'\xfa\xfa'
```

### SPI

| Pin 设备引脚号 | 开发板引脚名 | 功能 |
| -------------- | ------------ | -------------- |
|     58         |      PD11     | SCLK             |
|     59              |      PD12     | MOSI      |
|     60               |      PD13         | MISO                 |

- 示例

```python
from machine import Pin, SPI
clk = Pin(("clk", 58), Pin.OUT_PP)         
mosi = Pin(("mosi", 59), Pin.OUT_PP)       
miso = Pin(("miso", 60), Pin.IN)          
spi = SPI(-1, 500000, polarity = 0, phase = 0, bits = 8, firstbit = 0, sck = clk, mosi = mosi, miso = miso)
spi.write("hello rt-thread!")
```

- STM3F4-DISCOVERY固件下载

![rtthread.bin](/uploads/201804/20/162643nerhm4geo9me4m9g.attach)

- 正点原子 STM32F407 开发板固件

![new_正点原子407固件.rar](/uploads/201805/05/110639wgn1ql81t4utaunr.rar)