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STM8 COSMIC EXAMPLE ZIP FILE
The preferred hardware abstraction library most developers use with the STM8 is the Standard Peripheral Library: a ZIP file containing runtime libraries, example projects, and an alright-but-not-amazing help file. I did not evaluate any of the compilers other than Cosmic, but Philipp Klaus Krause’s site, ColecoVision, has an excellent STM8 compiler shoot-out. STM8 has support for several compilers - open-source, free-as-in-beer, and commercial.
STM8 COSMIC EXAMPLE WINDOWS
There’s plausible (though unintelligent) text completion and syntax-highlighting customizable text editor colors Workspace and Project-level file management quick debugging with bog-standard features and a fairly generic “just works” interface that anyone who’s used Windows 98 before will feel right at home with. IAR Embedded Workbench has support for the STM8, and it’s probably the only third-party solution I would recommend for this part.Īs far as proprietary vendor IDEs go, STVD is not completely terrible. There’s an open-source SDCC + GDB + OpenOCD project that heavily targets Eclipse, but it’s clunky to set up, and uses SDCC - which struggles to produce reasonably fast code. Cosmic has IDEA, which is little more than a text editor - it doesn’t even support debugging. Raisonance has Ride7, but it only works with their expensive RLink debugger. It can hook into Cosmic or Raisonance STM8 compilers, and provides project management, a text editor, and integrated debugging. There’s other IDE options out there, but I can’t comfortably recommend any of them. STVD - ST Visual Develop - is the official (and free) IDE for the STM8 microcontroller. The STM8 manages these trade-offs in an efficient manner. This is the only architecture in this round-up that has this level of granularity - all the other chips are either RISC-style processors that have lots of general-purpose registers they do their work in, or 8051-style CISC parts that manipulate RAM directly - but pay a severe penalty when hitting 16-bit address space. There’s three “reaches” for addressing - short (one-byte), long (two-byte), and extended (three-byte) - trading off memory area with performance. The claim to fame of the core is its comprehensive list of 20 addressing modes, including indexed indirect addressing and stack-pointer-relative modes. There’s a 32-bit-wide program memory bus which can fetch most instructions in a single cycle - and pipelined fetch/decode/execute operations permit many instructions to execute in a single cycle. The STM8 has a Harvard architecture, but uses a unified address space.
![stm8 cosmic example stm8 cosmic example](https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/75594/bfcaa32b-5960-c031-4a16-6758c49dfe3b.png)
The STM8 core has six CPU registers: a single accumulator, two index registers, a 24-bit program counter, a 16-bit stack pointer, and a condition register. Additional 8-bit basic timer, auto-wake-up timer, and beeper module.Three 16-bit timers (including an advanced control timer) with 9 channels of capture, compare, and PWM.16 MHz core with 32 KB of flash, 2K of RAM, and 128 bytes of byte-addressable EEPROM.The part I’m looking at in this review, though, is the STM8S005K6, which has an even better collection of features: suppliers sell the part in similar quantities for just north of $0.50 / unit should indicate the tremendous bargain the STM8 is. Yes, that works out to 22 cents a piece for an 8K flash / 1K RAM microcontroller with 20 pins, 7 CAPCOM channels, 128 bytes of EEPROM, and 5 channels of 10-bit 430 ksps analog-to-digital conversion. I recently spent 72 Yuan (~$11) on 50 of the most famous STM8 part: the STM8S003F3P6. ST has been dumping the STM8 in the Chinese market, so it’s one of the cheapest general-purpose microcontroller you can buy these days (and that includes parts from STC and Holtek - two staples found in low-cost products made in China). There are three families - the “S” mainstream line, the “A” atomotive line, and the “L” low-power line. The STM8 is ST’s family of 8-bit microcontrollers.