About JReed.1856

JReed.1856 · 2022-04-12

Hi,I am trying to connect to a 16 bit parallel display interface. To write new data, I have to use pins on five different ports (GPIOs A, B, C, D, E). Right now I am setting these pins like this:PORT_D15->BSRR = (PIN_D15 << 16) | (((data >> 15) & 0x...

JReed.1856 · 2022-03-30

Hi,I am trying to use a flash write and read module written for the STM32F103 on an STM32F405.However the F103 deals with pages and subpages. Some algorithms depend on subpage size. The F405 has sectors, which I guess are the equivalent to pages, but...

JReed.1856 · 2019-12-02

I'd like to only update variables, which are shown on the current screen. How do I get the current screen in a switch case structure, in the model::tick() function. I tried to alter the tick function to get the currentScreen parameter from the Fronte...

JReed.1856 · 2019-11-25

Is it possible to create a Text without ueing the Designer first? Seems like everything has to be done through the Text Manager.

JReed.1856 · 2022-04-19

08005512: mov.w r7, #268435456 ; 0x10000000 125 GPIOB->BSRR = (ILI9341_PIN_D3 << 16) >> (((data >> 3) & 0x01) * 16) | 08005516: ubfx r1, r0, #3, #1 126 (ILI9341_PIN_D0 << 16) >> (((data >> 0) & 0x01) * 16) | 0800551a: ...

JReed.1856 · 2022-04-19

So the subjectively quickest way looks like this:pin defines#define ILI9341_PORT_D0 GPIOB #define ILI9341_PORT_D1 GPIOE #define ILI9341_PORT_D2 GPIOE #define ILI9341_PORT_D3 GPIOB #define ILI9341_PORT_D4 G...

JReed.1856 · 2022-04-19

unfortunately also not possible since PC12 has bit9 and PB12 has bit 15.only way would be to have separate data arrays for every port and that would require getting those from the original data variable, which would be just as costly as the usual bit...

JReed.1856 · 2022-04-19

I just tried to implement it and I think this approach overlooks the fact, that my pins are not in order.So lets say, the used display pins on GPIOC are on PC2, PC7, PC12, however PC2 has Bit4, PC7 has Bit12 and PC12 has Bit9 of the parallel data to ...

JReed.1856 · 2022-04-19

But the way I understand this, I would have to AND data and mask as well, otherwise there would be pins set, that don't lead to the display at all. Am I misunderstanding?

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Quickest way to set multiple port pins

Using flash algorithm from F103 for F405

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