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From: | Georg-Johann Lay |
Subject: | Re: [avr-libc-dev] fwrite() not working as expected |
Date: | Sat, 10 Mar 2018 11:52:17 +0100 |
User-agent: | Thunderbird 2.0.0.24 (Windows/20100228) |
address@hidden schrieb:
Hi, I am trying to use fwrite() to write the first X bytes of a string like this, but with a wrong output: auto ret = fwrite("Hello World!", 1, 5, stdout); printf("%d\n", ret); // Output: H0 Its documented here: https://www.nongnu.org/avr-libc/user-manual/group__avr__stdio.html#gadd5777719a41713629a62b68c239a774 Can anyone please tell me if this is a bug or if I am doing something wrong. I am using avr-libc 2.0.0 on Arch Linux with the latest avr-gcc 7.3.0 ~Nico
How did you setup stdout? Using FDEV_SETUP_STREAM? https://www.nongnu.org/avr-libc/user-manual/group__avr__stdio.html#gaea2b6be92ead4673bc487b271b7227fbAre you sure the communication / output routines passed to stdout are correct and I/O correctly set up? Including host I/O, given you use it.
Johann
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