A digital oscilloscope Based on MCU - Revision history

Diandian: /* Future improvement can be done */

2022-04-30T14:54:12Z

Future improvement can be done

← Older revision		Revision as of 14:54, 30 April 2022
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	</math>		</math>

	[[File:Amplification circuit for improvement.png\|thumb\|center\|350px\|Fig.8 Amplification circuit for improvement]]		[[File:Amplification circuit for improvement.png\|thumb\|center\|350px\|Fig.10 Amplification circuit for improvement]]

	* Use a higher performance microcontroller, such as the STM32, and reduce the problems with writing downloading and jumping.		* Use a higher performance microcontroller, such as the STM32, and reduce the problems with writing downloading and jumping.

Diandian: /* Step 4:Programming and downloading the code to microcontroller */

2022-04-30T14:53:58Z

Step 4:Programming and downloading the code to microcontroller

← Older revision		Revision as of 14:53, 30 April 2022
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	===Step 4:Programming and downloading the code to microcontroller ===		===Step 4:Programming and downloading the code to microcontroller ===
	To program the microcontrollers made by ST Microelectronics you need a tool called STC-ISP(Figure.6).		To program the microcontrollers made by ST Microelectronics you need a tool called STC-ISP(Figure.6).
	[[File:stcisp.jpg\|thumb\|center\|450px\|Fig.6 Interface of STC-ISP for program downloading]]		[[File:stcisp.jpg\|thumb\|center\|450px\|Fig.7 Interface of STC-ISP for program downloading]]

	[[File:usbcode.jpg\|thumb\|center\|450px\|Fig.7 Usb serial port for communication]]		[[File:usbcode.jpg\|thumb\|center\|450px\|Fig.8 Usb serial port for communication]]


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	After testing, the circuit is normal, the power supply is normal, and the cold start error is suspected. However, the problem persisted after shorting P1.0 and P1.1 to ground. After checking the manual again and grounding P3.2, the program still could not be downloaded.		After testing, the circuit is normal, the power supply is normal, and the cold start error is suspected. However, the problem persisted after shorting P1.0 and P1.1 to ground. After checking the manual again and grounding P3.2, the program still could not be downloaded.

	[[File:adjustment.jpg\|thumb\|center\|450px\|Fig.8 a: Shorting P1.0 & P1.1 to ground; b: Shorting P3.2 to ground]]		[[File:adjustment.jpg\|thumb\|center\|450px\|Fig.9 a: Shorting P1.0 & P1.1 to ground; b: Shorting P3.2 to ground]]

	== Discussion ==		== Discussion ==

Diandian: /* Step 5:Test and measurement */

2022-04-30T14:53:09Z

Step 5:Test and measurement

← Older revision		Revision as of 14:53, 30 April 2022
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	[[File:adjustment.jpg\|thumb\|center\|450px\|Fig.8 a: Shorting P1.0 & P1.1 to ground; b: Shorting P3.2 to ground]]		[[File:adjustment.jpg\|thumb\|center\|450px\|Fig.8 a: Shorting P1.0 & P1.1 to ground; b: Shorting P3.2 to ground]]

	~~===Step 5:Test and measurement===~~

	== Discussion ==		== Discussion ==

Diandian: /* Step 4:Programming and downloading the code to microcontroller */

2022-04-30T14:51:26Z

Step 4:Programming and downloading the code to microcontroller

← Older revision		Revision as of 14:51, 30 April 2022
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	After testing, the circuit is normal, the power supply is normal, and the cold start error is suspected. However, the problem persisted after shorting P1.0 and P1.1 to ground. After checking the manual again and grounding P3.2, the program still could not be downloaded.		After testing, the circuit is normal, the power supply is normal, and the cold start error is suspected. However, the problem persisted after shorting P1.0 and P1.1 to ground. After checking the manual again and grounding P3.2, the program still could not be downloaded.

			[[File:adjustment.jpg\|thumb\|center\|450px\|Fig.8 a: Shorting P1.0 & P1.1 to ground; b: Shorting P3.2 to ground]]

	===Step 5:Test and measurement===		===Step 5:Test and measurement===

Diandian: /* Software program module */

2022-04-30T14:38:17Z

Software program module

← Older revision		Revision as of 14:38, 30 April 2022
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	The code was written in C. Use Keil software to edit and compile.		The code was written in C. Use Keil software to edit and compile.

	[[File:main_code.doc\|left]]		The complete code is [[File:main_code.doc\|left]]

	The main function is shown below:		The main function is shown below:

Diandian: /* Software program module */

2022-04-30T14:35:16Z

Software program module

← Older revision		Revision as of 14:35, 30 April 2022
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	[[File:main_code.doc\|left]]		[[File:main_code.doc\|left]]

			The main function is shown below:

	*void main(){		*void main(){

Diandian: /* Software program module */

2022-04-30T14:33:11Z

Software program module

← Older revision		Revision as of 14:33, 30 April 2022
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	The main program sets the initial state of the port, the encoder interrupt mode and the timer, and implements the functions by calling other functions.		The main program sets the initial state of the port, the encoder interrupt mode and the timer, and implements the functions by calling other functions.

	The rest of the program is more or less cosmetics, a grid of horizontal and vertical lines is displayed, the current values for sensitivity and timebase. The zero volt line is shown brighter that all others and it moves with the offset. A small line is shown where the current trigger level is. What at the moment is active on the rotary encoder, timebase, offset or trigger level, is shown in yellow.

	== Experimental setup ==		== Experimental setup ==

Diandian: /* Step 3:Circuit soldering */

2022-04-30T14:32:15Z

Step 3:Circuit soldering

← Older revision		Revision as of 14:32, 30 April 2022
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	===Step 3:Circuit soldering===		===Step 3:Circuit soldering===
			Here, we did not use a PCB but a cirucit board is to facilitate the adjustment of the circuit and the addition of components.
	The circuit was welted using a 350 degree soldering iron and solder according to the circuit schematic. The actual circuit we got finally is shown in figure 5.		The circuit was welted using a 350 degree soldering iron and solder according to the circuit schematic. The actual circuit we got finally is shown in figure 5.

Diandian: /* Software program module */

2022-04-30T14:32:02Z

Software program module

← Older revision		Revision as of 14:32, 30 April 2022
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	The code was written in C. Use Keil software to edit and compile.		The code was written in C. Use Keil software to edit and compile.

	[[File:~~code~~.doc\|left]]		[[File:main_code.doc\|left]]

	*void main(){		*void main(){

Diandian: /* Software program module */

2022-04-30T14:28:26Z

Software program module

← Older revision		Revision as of 14:28, 30 April 2022
Line 51:		Line 51:
	The code was written in C. Use Keil software to edit and compile.		The code was written in C. Use Keil software to edit and compile.

	[[File:code.doc\|~~center~~]]		[[File:code.doc\|left]]

	*void main(){		*void main(){