[Nucleo学习]Nucleo-F072RB板子资源认识

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dvd1478 发布时间：2015-1-12 09:32

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Features

One entry-level STM32F072RBT6 microcontroller with LQFP64 package
- ARM Cortex-M0 CPU at 48MHz
- 128 KBytes Flash
- USB 2.0 full-speed interface, able to run from internal 48 MHz oscillator, with BCD and LPM support
- Up to 12 timers
- 12-bit ADC 1 Msps up to 16 channels
- 12-bit DAC with 2 channels
- Up to 2x I2C, up to 4x USARTs, up to 2x SPIs.
- 96bit unique ID

Two types of extension resources
- Arduino Uno Revision 3 connectivity
- STMicroelectronics Morpho extension pin headers for full access to all STM32F072RBT6 I/Os

Flexible board power supply: USB VBUS or external source (3.5 V, 5 V, 7 V - 12 V)
On-board ST-LINK/V2.1 interfacing with the PC, with three different communication channels via USB
- Debug and programming port, to use STM32 Nucleo wth standard toolchains/debuggers/programmers
- Virtual Com port to send back traces to the PC
- Mass storage (USB Disk drive) for drag'n'drop programming

Arduino-compatible Headers

Morpho Headers - Giving access to all STM32 pins

Nucleo-F072RB开发板，把STM32F072RBT6所有IO的资源的引出来，注意观看上面两种图，描述了整个板子的开发资源，

其分为两种接口，Arduino Headers 与 Morpho Headers 。

红色如

表示电源部分

蓝色如

PA_13 是MCU的端口引脚 PortA.2，

深绿色如

表是Arduino 的引脚定义，并与Arduino 兼容，也就是Arduino的模块直接用到这里。

米色如

表示模拟端口， ADC 或者是 DAC

橙色如

表示是I2C 端口

黄色如

表示是串口端口

浅绿色如

表示SPI端口

紫色如

表示是PWM端口

mbed统一管脚定义会出现在hal目录对应MCU下的PinNames.h中

可以查看到一些常用的定义：

// Generic signals namings

LED1 = PA_5,

LED2 = PA_5,

LED3 = PA_5,

LED4 = PA_5,

USER_BUTTON = PC_13,

SERIAL_TX = PA_2,

SERIAL_RX = PA_3,

USBTX = PA_2,

USBRX = PA_3,

I2C_SCL = PB_8,

I2C_SDA = PB_9,

SPI_MOSI = PA_7,

SPI_MISO = PA_6,

SPI_SCK = PA_5,

SPI_CS = PB_6,

PWM_OUT = PB_3,

在PeripheralNames.h 定义了一些标准外设，在mbed编程是用不到，但可以了解一下资源情况

typedef enum {

ADC_1 = (int)ADC1_BASE

} ADCName;

typedef enum {

DAC_1 = (int)DAC_BASE

} DACName;

typedef enum {

UART_1 = (int)USART1_BASE,

UART_2 = (int)USART2_BASE,

UART_3 = (int)USART3_BASE,

UART_4 = (int)USART4_BASE

} UARTName;

#define STDIO_UART_TX PA_2

#define STDIO_UART_RX PA_3

#define STDIO_UART UART_2

typedef enum {

SPI_1 = (int)SPI1_BASE,

SPI_2 = (int)SPI2_BASE

} SPIName;

typedef enum {

I2C_1 = (int)I2C1_BASE,

I2C_2 = (int)I2C2_BASE

} I2CName;

typedef enum {

PWM_1 = (int)TIM1_BASE,

PWM_2 = (int)TIM2_BASE,

PWM_3 = (int)TIM3_BASE,

PWM_14 = (int)TIM14_BASE,

PWM_15 = (int)TIM15_BASE,

PWM_16 = (int)TIM16_BASE,

PWM_17 = (int)TIM17_BASE

} PWMName;

MCU与引脚资源分配情况，如下图所示

硬件连接时还要注意以下事项

Shields support notes

(1) - This shield requires SPI pins remapping because it uses a non-standard 6 pin SPI connector. Please refer to the shield page on mbed for more information.
(2) - To use this shield with ST Nucleo platforms you will need to remove SB13 and SB14 then bridge SB62 and SB63. This will enable the processor to communicate with the shield using the default serial connection, but will stop the comms going via the ST-Link and USB. Alternatively you could use other serial-enabled pins, which have to be connected to D0/D1 pins on the shield. Please refer to the the Nucleo pinout image for options.
(3) - This shield uses I2C on A4/A5 pins and requires bridging of A4<->D14 and A5<->D15.
(4) - To boot on external power, the PWR jumper (near the reset button) has to be switched to E5V position.

具体的相关硬件资源可以查看手册：

UM1724 User manual STM32 Nucleo boards.pdf

原文地址： http://blog.sina.com.cn/s/blog_7e7fa4c80102vby8.html