Avr Gcc Printf Serial Season
From what i've researched here is my thoughts on both. CI heard that you can create libraries using C in arduino. And you can use the Arduino IDE to do that stuff. Here is the proofNotice that it uses the C syntax.I also see arduino projects on github written on C.
CI heard that you can use AVR GCC and code it without the arduino ide. And I heard it's much faster than the arduino language because it's more closer to the metal. But I think it's harder to set up because you need a programmer into the Atmel chip, which is much more costlier compared to directly plugging in the arduino using the USB to printer cable. And you also need to download a bunch of stuff to get coding in pure avr gcc (win-Avr GCC, atmel studio etc.).Which one should i learn C or C?
I prefer the easy to debug route. Or is it beneficial if i learn both? The basic syntax of C and C is very similar, to the point that C code can typically be compiled directly as C. You'll also find C standard functions (such as printf and malloc) can be used from C programs.The major difference in the core language is that C has a lot of extra stuff such as classes and templates. Conventionally, C also has a huge standard library which doesn't work on C. However, that's not usually available (nor really appropriate) for Arduino programming, so you don't need to worry too much about it unless you migrate to e.g.
Desktop programming.Basically, it's probably sensible to learn C first, because the same knowledge works in C. You can then move on to the C-specific stuff, such as classes.As a side note, the Gnu Compiler Collection (GCC) actually covers both C and C.
It's what the Arduino IDE at Atmel Studio use under-the-hood for all their compilation. Dudley perkins a lil light zip up hoodie. It's even possible to work directly with GCC but still upload programs to Arduino via USB.It's also worth noting that programs compiled within the Arduino IDE aren't necessarily going to run any slower than programs compiled some other way (whether C or C). The main difference is whether or not you use the Arduino functions. Since they are general purpose, they're not necessarily doing things the most optimal way. You could get more efficiency in theory by manipulating the microcontroller's special registers directly, which is you can do from within the Arduino IDE as well. It's usually very tricky for a beginner though, so it's probably not something you want to attempt until you're more comfortable with C/C.
@ConnorWolf Way too kind.Arduino is based on Wiring, which is based on Processing, which is a kludge of Java, resembling C running on an embedded prototyping platform ill suited for learning programming by any Definition. Many libraries half written and confusing, implementing only as much as the original author needed, not the entire spec (SPI being a great example).Get a Pi for the same price, at least it is an end user computer for poor people.Besides, if you have something that can run the Ardunino IDE why are you learning to program on an Arduino? You need to be proficient in C or C before you attempt anything for real on an Arduino. Blinking lights is fine, beyond that, good luck.Learn C or C (preferred as it is newer) on what you have, then start using the Arduino. Eclipse or Microsoft Visual Studio Community are both free and support both languages. (Both also support Arduino development when the time comes, avoid the Arduino IDE it is terrible). There are enough samples for either to keep you busy for a long time.
Embedded programming REQUIRES understanding of low level hardware and IS NOT suitable for learning.Forget modern debugging. Paid engineers grumble when they have to do it and it cost a decent price for the enabling hardware. Stick to the old fashioned printf debugging style.
Atmel Studio Serial Print
For microcontollers, you typically have to define your own putc function to send bytes to whichever UART you're using. Print will then call your putc.Check the documentation for the libraries supplied with your compiler.Note that this is entirely unrelated to how you intialise your UART. All that matters is which UART you're using.(On an unrelated issue, rather than saying: PINSEL0 = 0x00050000; /. Enable RXD1 TxD1./U1LCR = 0x00000083; /.8 bits, 1 Stop bit./there are typically #defines for registers which (usually) aid readability, provide a link to the bit names in the documentation, and reduce the need for comments to be added and maintained on every line like these.
Avr Gcc Printf Serial Season 9
For example: PINSEL0 = PICSEL0RXD1EN PICSEL0TXD1EN;U1LCR = U1LCR8BITS U1LCR1STOPBIT.and so on.). To make printf, puts etc work on an embedded platform, you need to implement some hooks that work with the C library. This is typically dependent on the C libraries provided with your compiler, so is probably compiler-dependent. But in many cases the library just requires you to provide a putc function (or similar name), which takes a character (generated by the printf library function) and sends it to your chosen output device.
That could be a memory buffer, serial port, USB message, whatever.From the point of view of the C library, the putc function would be run-to-completion, so it's up to you whether you implement it to be a simple blocking function (waiting until the serial port is free and sending the character), or non-blocking (putting it into a buffer, to be sent by a background interrupt task; but the buffer might fill up if you output enough bytes fast enough, and then you have to either block or discard characters). You can also make it work properly with your RTOS if you have one, implementing a blocking write that sleeps on a semaphore until the serial port is available.So, in summary, read the documentation for your compiler and its C library, and it should tell you what you need to do to make printf work.Example links for AVR micro with GCC compiler:.ARM GCC compiler using newlib C library:.