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Useing HT66F318 UART access to GPIO, LED matrix, EEPROM, ADC, I2C...internal resource (Same RS-485 port)
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此專案利用PC軟件通過UART port下達指令以存取MCU內部的EEPROM(64bytes), ADC(8ch 12bits), PWM output(10bit), Capture...
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後續還可以持續增加I2C(Hi resolution adc), SPI(OLED display) 都透過UART port
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Project Option:
HXT (External 8MHz X'tal): 可選項有:HXT(400K~16Mhz),HIRC4M,HIRC8M,HIRC12M
LICR (Low speed internal RC for TB0/TB1): 可選項有:LXT(32.768Khz),LIRC(32Khz)
WatchDog: enable -
UART port baudrate setting 9600,N,8,1 ;Protocol format refer RS-485 Modbus & CRC-16
通訊協議格式參照RS-485通訊協議格式(Modbus & CRC-16). -
TB0,1 enable LIRC interrupt for 0.514sec, 0.514sec
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TM0 enable HXT interrupt for 200us
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ADC輸入控制 ADC設置直接透過AN0~AN7讀取外部輸入,或AVDD,AVDD1/2,AVDD1/4讀取內部輸入
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訊號輸入捕捉 Capture(HT66F317)設置TP1當輸入條件16bit+16bit counting
Capture(HT66F318)設置TP1當輸入條件10bit+16bit counting -
HT-IDE3000 HT66F317/HT66F318 28ssop with HT-IDE3000 & e-Link & e-WriterPro
文件HT66F318 Document
模擬&除錯Development & DebugIDE3000 & ICE
燒入器Progrmming & writerHOPE3000 & e-WriterPro
- HT-IDE3000 V8.02
- HOLTEK C Compiler V3/Assembly
- HT66F318 Config, used 8Mhz X'tal external, VDD/VDDA binding
- HT66F318 28ssop Schematic Diagram
利用PC通訊軟件做為主動工具, 協議(9600,n,8,1), 格式比照RS-485格式(PC指令CRC用 A0 0A代替, MCU反饋的為CRC-16)
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For Example:
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UART Formate(Get from MCU): 44 03 00 00 00 04 A0 0A #讀取EEPROM位址0x0000,4組(共計8個bytes) MCU return設計最大每次讀取四組(8byte) 所以反饋時: 44 03 08 00 01 02 03 04 05 06 07 CRC CRC
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UART Formate(Write to MCU): 44 06 00 0A EE FF A0 0A #寫入EEPROM位址0x000A,資料為0xEEFF MCU return: 44 06 00 0A EE FF CRC CRC
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UART Formate(Get from MCU): 44 03 03 00 00 02 A0 0A #讀取Capture通道0, 1組4個bytes MCU return Capture: 44 03 04 03 FF FF FF CRC CRC MCU return Capture: 44 03 04 08 00 00 00 EC 97
- UART access to ADC converter(HY3118 24bit ADC) via I2C bus.
- UART access to OLED 16x2 display driver via SPI bus.