https://electwork.net/en/tags/stm32/ Recent content in STM32 on Electronics Lifehack! https://electwork.net/images/ogp-default.jpg?v=3 https://electwork.net/images/ogp-default.jpg?v=3 Hugo -- gohugo.io en Mon, 20 Jul 2026 00:00:00 +0900 https://electwork.net/en/posts/i2c-spi-uart-comparison/ Mon, 20 Jul 2026 00:00:00 +0900 https://electwork.net/en/posts/i2c-spi-uart-comparison/ How I2C, SPI and UART differ, compared by signal count, speed, multi-device support and wiring distance. Covers pull-up sizing, SPI modes 0-3 and baud rate, with a decision flow for Arduino, ESP32 and STM32. https://electwork.net/en/posts/stm32-episode12/ Fri, 08 May 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode12/ The final episode: catch the moment C becomes machine code. How GCC optimization (-O0/-O2/-Os) rewrites your code, why forgetting volatile causes a hang, and how to read Thumb-2 instructions with objdump. https://electwork.net/en/posts/stm32-episode11/ Sat, 02 May 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode11/ Hands-on STM32 linker script and map file walkthrough on a NUCLEO-F401RE: what .text/.data/.bss really are, LMA vs VMA, and reading arm-none-eabi-size to find what eats Flash and RAM. https://electwork.net/en/posts/stm32-episode10/ Thu, 30 Apr 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode10/ Stop letting UART transmissions stall your main loop — DMA fixes it. From STM32's bus architecture to transfer-complete callbacks, buffer management, and the D-Cache coherency trap. Episode 10 of the series. https://electwork.net/en/posts/stm32-episode09/ Sun, 26 Apr 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode09/ Learn STM32 interrupt anti-patterns by deliberately breaking real code: ISR printf deadlock, volatile-missing optimization bugs, I2C timing breakdown, and non-atomic shared variable corruption. https://electwork.net/en/posts/stm32-episode08/ Fri, 17 Apr 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode08/ STM32 interrupts on the NUCLEO-F401RE, from zero: vector table structure, NVIC priority, context saving (8 registers auto-pushed to the stack), and a TIM2 periodic interrupt implementation. https://electwork.net/en/posts/stm32-episode07/ Wed, 08 Apr 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode07/ Measure execution time to µs precision with DWT CYCCNT on the STM32 NUCLEO-F401RE. Covers clock frequency, CPU cycles, how it differs from SysTick, and GPIO toggle plus oscilloscope measurement. https://electwork.net/en/posts/stm32-episode06/ Sat, 28 Mar 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode06/ Reproduce pointer misuse on the STM32 NUCLEO-F401RE and study six failure modes — HardFault, dangling pointers, stack lifetime, out-of-bounds arrays, undefined behavior, and optimization bugs — in the debugger. https://electwork.net/en/posts/stm32-episode05/ Wed, 25 Mar 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode05/ C pointers explained as 'typed addresses': declaration, dereferencing, the type-address relationship, casts, and memory-mapped I/O on STM32. See how CMSIS headers abstract registers with pointers. https://electwork.net/en/posts/stm32-episode04/ Sat, 14 Mar 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode04/ Manipulate STM32 (NUCLEO-F401RE) GPIO registers directly: bit masks and shifts, the Read-Modify-Write (RMW) hazard, and the atomic BSRR register. Includes a measured HAL vs register speed comparison. https://electwork.net/en/posts/stm32-episode03/ Fri, 06 Mar 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode03/ C struct padding and alignment observed in the STM32 debugger's Memory view: array layout in SRAM, padding bytes between members, sizeof() surprises, volatile, and RAM-saving member reordering. https://electwork.net/en/posts/stm32-episode02/ Sun, 01 Mar 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode02/ Learn the STM32 memory map (Flash / SRAM / peripheral registers) and watch where variables land. Verify locals on the stack, globals in SRAM, and constants in Flash at real addresses in the debugger. https://electwork.net/en/posts/stm32-episode01/ Mon, 23 Feb 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode01/ Use STM32CubeIDE's debugger to watch the microcontroller's internal state change as a program runs — as concrete addresses. Program counter, peripheral registers, and SRAM variables are all managed by address. https://electwork.net/en/posts/stm32-episode00/ Tue, 17 Feb 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-episode00/ Why embedded programming seems hard, explained clearly. Pointers, interrupts, DMA and the stack all make sense through two lenses: 'place' (memory as a physical location) and 'time' (execution timing). https://electwork.net/en/posts/stm32-series/ Thu, 12 Feb 2026 00:00:00 +0900 https://electwork.net/en/posts/stm32-series/ Learn embedded fundamentals by digging into the 'why' behind Arduino: pointers as typed addresses, registers as bit collections, interrupts as time control. 13 episodes using NUCLEO-F401RE and STM32CubeIDE.