ARM® mbed™ 物联网设备平台基于ARM微处理器，能够最短的时间创建支持商用与互操作的互联物联网设备，同时跨细分市场的节点与云服务之间的互操作性可最大限度发挥物联网的潜力。
1.新唐ARM® mbed™ 平台页面
- https://developer.mbed.org/platforms/nuvoton-M453/
- https://developer.mbed.org/platforms/NUVoton-NUC472/
2.新唐ARM® mbed™ 特色
- 微控制器以Cortex®-M4为核心
- Flash/SRAM: M453 256KB/32KB，NUC472 512KB/1MB
- 支持Arduino接脚
- 支持CAN、rs485、USB.NUC472支持Ethernet
- 提供三轴加速度计与三轴陀螺仪
- 以扩充板支持Wi-Fi，Bluetooth，802.15.4，Thread等.
3.NuMaker-PFM-NUC472 Components
- Main Chip: NUC472JI8AE
- Core
- Arm® Cortex®-M4F core running up to 84 MHz
- Supports DSP extension and FPU
- Memory
- 512 Kbytes Flash memory
- 64 Kbytes embedded SRAM
- Peripherals
- SPI (x4), I2C (x5), I2S (x2), UART (x6)
- PWM (x16), GPIO (x114), CAN (x2)
- USB OTG / Host / Device
- Smart Card (x6), SDIO, Ethernet MAC, Crypto
- ADC (2x16-ch), OP (x2), Comparator (x3)
- Others
- Nu-Link-Me ICE bridge
- 1 Mbytes SRAM
- 3-axis Accelerometer and Gyroscope (MPU6500)
- audio Codec (NAU8822LYG)
- RS232, RS485, CAN Transceivers
- Ethernet
- microsd Card socket
- Buttons (x2)
- Buzzer
- RGB LED, Battery
4.NuMaker-PFM-NUC472 Pin-out
5.程序示例
Example: SD File System
•Access file system backed by SD card in SD bus mode
•Follow file system/block device introduced with Mbed OS 5.4
-NuMaker-mbed-SD-FileSystem-example (new)
-NuMaker-mbed-SDFileSystem-example (deprecated)
•Support target
-NuMaker-PFM-NUC472
-NuMaker-PFM-M453
•New program à Choose Template “NuMaker SD-File-System with SD mode”
Example: SD File System
// SD block device
NuSDBlockDevice bd;
// FAT file system mounted on path “/fs”
FATFileSystem fs("fs");
int main() {
// Optional: Format SD card to FAT file system
FATFileSystem::format(&bd);
// Mount the SD card on “/fs” path
fs.mount(&bd);
// Open “/fs/test.txt” for write
FILE* fd = fopen("/fs/test.txt", "w");
// Write to “/fs/test.txt”
fprintf(fd, “Hello file system\n");
// Close “/fs/test.txt”
fclose(fd);
... ... |
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