Search found 35 matches
- Sun May 10, 2020 9:02 am
- Forum: ESP8266 boards
- Topic: USB driver crashes PC
- Replies: 1
- Views: 11701
USB driver crashes PC
Hello, This post is not directly about MicroPython, so please pardon me should this post not belong here :-) I am running MicroPython on a NodeMCU ESP8266 clone (by Lolin). Intermittently I see the Windows 10 blue screen with an error in the USB serial driver CH341S64.SYS. I have tried drivers from ...
- Tue Jul 09, 2019 3:13 pm
- Forum: Other Boards
- Topic: [BLACK STM32F407VET6:STM32F407] Battery-backed/persistent memory
- Replies: 5
- Views: 4704
Re: [BLACK STM32F407VET6:STM32F407] Battery-backed/persistent memory
Thanks! I found there were 4 steps to do: //set Backup regulator enable -- do once SET_BIT(PWR->CSR, PWR_CSR_BRE); //enable power interface clock __HAL_RCC_PWR_CLK_ENABLE(); //enable BBRAM interface clock SET_BIT(RCC->AHB1ENR, RCC_AHB1ENR_BKPSRAMEN); //Enable access to RTC domain by setting the DBP ...
- Mon Jul 08, 2019 4:37 am
- Forum: Other Boards
- Topic: [BLACK STM32F407VET6:STM32F407] Battery-backed/persistent memory
- Replies: 5
- Views: 4704
[BLACK STM32F407VET6:STM32F407] Battery-backed/persistent memory
Hi,
I would like to store some invariant data on the BLACK STM32F407VET6 board while
the main power is removed (coin cell remains connected).
The STM32F407 has 4kByte of battery backed SRAM. Is this accessible in MicroPython?
Thanks
PP
I would like to store some invariant data on the BLACK STM32F407VET6 board while
the main power is removed (coin cell remains connected).
The STM32F407 has 4kByte of battery backed SRAM. Is this accessible in MicroPython?
Thanks
PP
- Tue Jun 18, 2019 4:49 am
- Forum: Other Boards
- Topic: [Black STM32F407VET6] Pin map
- Replies: 10
- Views: 7594
- Tue Jun 18, 2019 3:21 am
- Forum: Drivers for External Components
- Topic: ILI9340/ILI9341 TFT Display
- Replies: 37
- Views: 60608
Re: ILI9340/ILI9341 TFT Display
Hi Everyone.
Has anyone got this code for (ILI9340/ILI9341 TFT Display) working on the STM32F407?
Thanks!
Has anyone got this code for (ILI9340/ILI9341 TFT Display) working on the STM32F407?
Thanks!
- Sun Jun 16, 2019 2:36 pm
- Forum: General Discussion and Questions
- Topic: Arbitrary precision LibBF library port to MicroPython
- Replies: 3
- Views: 2542
Re: Arbitrary precision LibBF library port to MicroPython
My own use is to build a calculator that specializes in calculating lunar phases - probably double precision (53 bits) would be sufficient there, but higher precision can't hurt. I think it would eventually morph into a homebrew DM42 . Other uses of higher-than-single-precision could be: - accurate ...
- Sun Jun 16, 2019 4:22 am
- Forum: Other Boards
- Topic: [Black STM32F407VET6] Pin map
- Replies: 10
- Views: 7594
- Sat Jun 15, 2019 5:44 pm
- Forum: Other Boards
- Topic: [Black STM32F407VET6] Pin map
- Replies: 10
- Views: 7594
Re: [Black STM32F407VET6] Pin map
I see. The header directly opposite to the JTAG connector is marked "For mcudev/TFT" -- looks like the parallel LCD bus... is this documented somewhere? I found all the GPIO pin mux in ports/stm32/boards/stm32f405_af.csv. This is referenced by boards/BLACK_F407VE/mpconfigboard.mk. stm32f405_af.csv c...
- Sat Jun 15, 2019 3:24 pm
- Forum: General Discussion and Questions
- Topic: Arbitrary precision LibBF library port to MicroPython
- Replies: 3
- Views: 2542
Arbitrary precision LibBF library port to MicroPython
Hi, I needed better than single-precision arithmetic support on the STM32F4 microcontrollers. MPFR and mpdecimal are the silverbacks in MP arithmetic land but are too big for my target. I tried to port MPMATH , but gave up trying to port that to MicroPython (kept running into MemoryError forever jus...
- Sat Jun 15, 2019 2:46 pm
- Forum: Other Boards
- Topic: [Black STM32F407VET6] Pin map
- Replies: 10
- Views: 7594
Re: [Black STM32F407VET6] Pin map
Thanks. I can see these. __class__ __name__ DAC1 DAC2 LED_D2 LED_D3 OSC32_IN OSC32_OUT PA0 PA1 PA10 PA11 PA12 PA13 PA14 PA15 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9 PB0 PB1 PB10 PB11 PB12 PB13 PB14 PB15 PB2 PB3 PB4 PB5 PB6 PB7 PB8 PB9 PC0 PC1 PC10 PC11 PC12 PC13 PC14 PC15 PC2 PC3 PC4 PC5 PC6 PC7 PC8 PC9 PD0...