About JJoao.1

JJoao.1 · 2024-05-03

Hi everybody,I have a lot of the same warnings, but the compilation is ok! I would still like to try to solve themin my main.c in this line : st7567_Write_Number2(100, 27, D_seconde, Number_microsoftSansSerif_14pt, INFO_Number_microsoftSansSerif_14pt...

JJoao.1 · 2024-05-01

Hi everybody, I would like create a smart watch with a STML031 and a driver for screen ST7567.I'm looking for the best way to make this watch in outline. Particularly regarding the precision obtained for 1Hz.I would like to get as much precision as p...

JJoao.1 · 2024-04-22

Hi everybody, After several attempts, I cannot correctly declare my variables in the files. I'm a little lost with file declarations to reach certain variables delcared elsewhereThis is why I decided to come and ask for help. I 'm actually work on a ...

JJoao.1 · 2024-04-12

Hi everybody, Actually I start a new project with a ST7567 driver for LCD 128x64. I have create my project with CubeIDE . CubeIDE generate my code in the main.c like this : /* Private variables ----------------------------------------------------...

JJoao.1 · 2023-12-16

Hello everybody,Actually I'm working on a temperature sensor. This project works on battery (2 x 1.5 V alkaline).I would like to read the temperature in the room with an external analog sensor.But I don't understand how VrefIN works. Because my Vcc s...

JJoao.1 · 2024-04-22

Thank you s omuch for your answwers !I think I succeeded!I redid the configuration as in the link sent by Andrew Neil.I had to create a .c and a .h fileIn the .h i declared extern variablein my .c file I write my font normaly.And in my Main.c I inclu...

JJoao.1 · 2024-04-22

Thank you for the reply AScha.3 ,I created them and not imported themI wonder if I should create a font.c instead of font.h

JJoao.1 · 2024-04-12

Thank you so much for your reactivity. I can continue my learning and my code Best regards

JJoao.1 · 2024-04-12

Okay thank you so much. That works !which is the best solution of the two castsolution1void st7567_write_cmd(uint8_t cmd) { HAL_GPIO_WritePin(A0_GPIO_Port, A0_Pin, 0); HAL_SPI_Transmit(&hspi1, (uint8_t*)&cmd, 1, 10); } Or solution 2void st7567_writ...

JJoao.1 · 2024-04-12

of course, My code in the st7567_driver.c :#include <stdint.h> #include <stdbool.h> #include <string.h> #include <errno.h> #include "st7567_driver.h" void st7567_write_cmd(uint8_t cmd) { HAL_GPIO_WritePin(A0_GPIO_Port, A0_Pin, 0); HAL_SPI_Transmi...

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Warning on passing argument

STM32L0 for smart watch

Join a font in a main.C

How to use SPI in other .c

Read a temperature sensor on a battery system

Re: Join a font in a main.C

Re: Join a font in a main.C

Re: How to use SPI in other .c

Re: How to use SPI in other .c

Re: How to use SPI in other .c