$10 O-Scope revisited

it’s possible to change the Landscape -format to Portrait,
than we could display the Signal with full 8 bit resolution (256) in the high and had place for scope-settings (delay, trigger, …) in a own in the 84 x 240 field on the top or on the ground ?

it’s possible to change the Landscape -format to Portrait,
than we could display the Signal with full 8 bit resolution (256) in the high and had place for scope-settings (delay, trigger, …) in a own in the 84 x 240 field on the top or on the ground ?

I think with the 8 bit it’s difficult too, because the MCP6.. has only 1% accuracy and you have to select other components to better than 0,5 %.

And I think better than 7bit it’s for hobbyist enough .

This way we can simply set the variable we want and that’s it

What do you think?

but I think a Scope is more for the signal form etc, not for the accuracy ( if the amplitude is 2.5V or 2.516 V) .

but I think a Scope is more for the signal form etc, not for the accuracy ( if the amplitude is 2.5V or 2.516 V) .

My original development was on Bluepill, so the codebase can be adapted to work with generic F103 boards.

I will start another thread for that.

pic2.png

pic2.png (164.74 KiB) Viewed 1752 times

I will start another thread for that.

I tried to change it to Maple MiniMaple MiniОтладочные и вычислительные платы…8MHz petertumler Thu Sep 24, 2015 10:58 am Hi, I’m trying to underclock a STM32F103 ( Maple Mini ) to 48MHz (for energy efficiency reasons). According to the datasheet .. The full…Underclocking STM32F103 to 48MHz ↗ and to the SPI-TFT-Display ILI9341ILI9341Дисплеи, сенсорные панели и светодиоды… shows on my screen. I have used and programmed a few different types of SPI screens( ili9341 , st7735) using Python very successfully and these parallel screens have many of the…[SOLVED] FSMC LCD on STM32F407VET ↗:

STM32STM32Микроконтроллеры и процессоры…Map magic glue code, ethernet compiles, just WARNING: library LwIP claims to run on [ stm32 ] architecture(s) and may be incompatible with your current board which runs on [STM32]…[STM32GENERIC] F429i Discovery ↗-O-Scope_DSO-138.JPG

STM32STM32Микроконтроллеры и процессоры…Map magic glue code, ethernet compiles, just WARNING: library LwIP claims to run on [ stm32 ] architecture(s) and may be incompatible with your current board which runs on [STM32]…[STM32GENERIC] F429i Discovery ↗-O-Scope_DSO-138.JPG (51.33 KiB) Viewed 1713 times

I tried to change it to Maple MiniMaple MiniОтладочные и вычислительные платы…8MHz petertumler Thu Sep 24, 2015 10:58 am Hi, I’m trying to underclock a STM32F103 ( Maple Mini ) to 48MHz (for energy efficiency reasons). According to the datasheet .. The full…Underclocking STM32F103 to 48MHz ↗ and to the SPI-TFT-Display ILI9341ILI9341Дисплеи, сенсорные панели и светодиоды… shows on my screen. I have used and programmed a few different types of SPI screens( ili9341 , st7735) using Python very successfully and these parallel screens have many of the…[SOLVED] FSMC LCD on STM32F407VET ↗:

STM32STM32Микроконтроллеры и процессоры…Map magic glue code, ethernet compiles, just WARNING: library LwIP claims to run on [ stm32 ] architecture(s) and may be incompatible with your current board which runs on [STM32]…[STM32GENERIC] F429i Discovery ↗-O-Scope_DSO-138.JPG

But I have only changed at this time the Display-Pins ( CS,RST,DC,CLK) and the pins from the encoder.

To move the ADC Inputs (PA0 , PA4) is for me difficult or impossible , because their is something written in assembler.

But I think I have to take an second STM32F103STM32F103Микроконтроллеры и процессоры…19.html . ag123 Sat Apr 28, 2018 5:54 pm come to think of it blue pill / maple mini ( stm32f103 ) is an *ideal* keyboard controller, the scanning can be done with assistance of sh…[SOLVED] generic blue pill clone as USB keyboard ↗ …

I tried to change it to Maple MiniMaple MiniОтладочные и вычислительные платы…8MHz petertumler Thu Sep 24, 2015 10:58 am Hi, I’m trying to underclock a STM32F103 ( Maple Mini ) to 48MHz (for energy efficiency reasons). According to the datasheet .. The full…Underclocking STM32F103 to 48MHz ↗ and to the SPI-TFT-Display ILI9341ILI9341Дисплеи, сенсорные панели и светодиоды… shows on my screen. I have used and programmed a few different types of SPI screens( ili9341 , st7735) using Python very successfully and these parallel screens have many of the…[SOLVED] FSMC LCD on STM32F407VET ↗:

But I have only changed at this time the Display-Pins ( CS,RST,DC,CLK) and the pins from the encoder.

To move the ADC Inputs (PA0 , PA4) is for me difficult or impossible , because their is something written in assembler.

But I think I have to take an second STM32F103STM32F103Микроконтроллеры и процессоры…19.html . ag123 Sat Apr 28, 2018 5:54 pm come to think of it blue pill / maple mini ( stm32f103 ) is an *ideal* keyboard controller, the scanning can be done with assistance of sh…[SOLVED] generic blue pill clone as USB keyboard ↗ …

I had a some problems to make the program stable, I have to change a lot of pins, and some pins must be pwm-Pins.

Now I have PA4 free for SPI and the analog Inputs are on PA0 and PB0.

It’s not much work,
– delete complete src lib in the download DLO-138
– change the libs in Adafruit… in DLO-138.ino and insert <SPI.h>
– change in display.ino :
Adafruit_ILI9341ILI9341Дисплеи, сенсорные панели и светодиоды… shows on my screen. I have used and programmed a few different types of SPI screens( ili9341 , st7735) using Python very successfully and these parallel screens have many of the…[SOLVED] FSMC LCD on STM32F407VET ↗_STM tft = Adafruit_ILI9341ILI9341Дисплеи, сенсорные панели и светодиоды… shows on my screen. I have used and programmed a few different types of SPI screens( ili9341 , st7735) using Python very successfully and these parallel screens have many of the…[SOLVED] FSMC LCD on STM32F407VET ↗_STM(TFT_CS, TFT_DC, TFT_RST); // Using hardware SPI
//Adafruit_TFTLCD_8bit_STM32STM32Микроконтроллеры и процессоры…Map magic glue code, ethernet compiles, just WARNING: library LwIP claims to run on [ stm32 ] architecture(s) and may be incompatible with your current board which runs on [STM32]…[STM32GENERIC] F429i Discovery ↗ tft;
– delete their tft.reset() and change tft.begin(0x9341) to tft.begin
– change the global.h (different MapleMapleОтладочные и вычислительные платы…expensive short of buying in bulk. many resort to usb-serial converters. today comes leaflabs maple , stm32duino it is ‘disruptive’ in a similar light, user customizable usb is no…Linux Journal ↗/blue-pill)

here my MapleMapleОтладочные и вычислительные платы…expensive short of buying in bulk. many resort to usb-serial converters. today comes leaflabs maple , stm32duino it is ‘disruptive’ in a similar light, user customizable usb is no…Linux Journal ↗-global h:

// comment out following line to use DSO push buttons instead of encoder

#define USE_ENCODER

// serial print macros

#define DBG_INIT(...) 		{ Serial.begin(__VA_ARGS__); 	}
#define DBG_PRINT(...) 		{ Serial.print(__VA_ARGS__); 	}
#define DBG_PRINTLN(...) 	{ Serial.println(__VA_ARGS__); }

#define SERIAL_BAUD_RATE 115200

// analog and digital samples storage depth
#define NUM_SAMPLES 2048

// TFT_SCK PA5 // D6 #####
// TFT_MOSI PA7 // D4 #####

#define TFT_CS        PA4   // D7  ##### PA14  // PA14 D21
#define TFT_DC        PA15  // D20 #####
#define TFT_RST       112   // 112 ##### //PA13    // 3.3V

// display colours

#define AN_SIGNAL1 		ILI9341_YELLOW
#define AN_SIGNAL2 		ILI9341_MAGENTA
#define DG_SIGNAL1 		ILI9341_RED
#define DG_SIGNAL2 		ILI9341_BLUE

// pin definitions (DSO138DSO138Модули, приборы и готовые устройства…kinda. … scope.html M-17 “DLO-138” – Alternative open source firmware for well known DSO-138 ! This is from our forum here (Thank You, willfly1 !!): It can be used on original DSO…DIY Oscilloscopes – List and Discussions ↗)

#define BOARD_LED 		PC13  // D14 ##### PA15
#define TEST_WAVE_PIN PA9   // D26 ##### PA7 D4  // PWM 1KHz square wave output
#define TRIGGER_IN		PA8
#define TRIGGER_LEVEL	PB8
#define VGEN		    	PA10  // D25 ###### PB9		// used to generate negative voltage in DSO138

// captured inputs

#define AN_CH1 			PA0		// D11 analog channel 1
#define AN_CH2 			PB0   // D3 ###### //PA4=D7		// analog channel 2
#define DG_CH1 			PA13	// digital channel 1 - 5V tolerant pin. Pin mask throughout code has to match digital pin
#define DG_CH2 			PA14	// digital channel 2 - 5V tolerant pin. Pin mask throughout code has to match digital pin

// misc analog inputs

#define VSENSSEL1 	PA2
#define VSENSSEL2		PA1
#define CPLSEL			PA3

// switches
#define ENCODER_A PB3 // D19 ##### // PB13 //##################################
#define ENCODER_B PB4 // D18 ##### // PB14 //##################################
#define ENCODER_SW PB5 // D17 ##### // PB12 //##################################
#define BTN4 PB6 // D16 ##### // PB15
/*
// switches
#define ENCODER_SW PB12
#define ENCODER_A PB13
#define ENCODER_B PB14
#define BTN4 PB15
*/
// TFT pins are hard coded in Adafruit_TFTLCD_8bit_STM32STM32Микроконтроллеры и процессоры…Map magic glue code, ethernet compiles, just WARNING: library LwIP claims to run on [ stm32 ] architecture(s) and may be incompatible with your current board which runs on [STM32]…[STM32GENERIC] F429i Discovery ↗.h file
// TFT_RD PB10
// TFT_WR PC15
// TFT_RS PC14
// TFT_CS PC13
// TFT_RST PB11

// FLASH memory address defines

#define PARAM_PREAMBLE	0
#define PARAM_TIMEBASE	1
#define PARAM_TRIGTYPE	2
#define PARAM_TRIGDIR	3
#define PARAM_XCURSOR	4
#define PARAM_YCURSOR	5	// 5,6,7,8 - 4 params
#define PARAM_WAVES		9	// 9,10,11,12 - 4 params
#define PARAM_TLEVEL	13
#define PARAM_STATS		14
#define PARAM_ZERO1		15
#define PARAM_ZERO2		16

#define LED_ON	digitalWrite(BOARD_LED, LOW)
#define LED_OFF	digitalWrite(BOARD_LED, HIGH)

// number of pixels waveform moves left/right or up/down

#define XCURSOR_STEP	25
#define YCURSOR_STEP	5

#define BTN_DEBOUNCE_TIME 350