FreeCalypso > hg > freecalypso-tools
view rvinterf/lowlevel/rviflcd.c @ 470:1d5bd9a06781
rvinterf tree Makefiles: split CPPFLAGS from CFLAGS
This change is in preparation for allowing CFLAGS to be overridden
by users and package builders.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Tue, 12 Feb 2019 00:00:18 +0000 |
parents | a626f0ef542a |
children |
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/* * This rvinterf module implements the piping of LCD output to fc-lcdemu */ #include <sys/types.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include <unistd.h> extern u_char rxpkt[]; extern size_t rxpkt_len; char *extlcd_program; FILE *extlcd_pout; void open_extlcd_pipe() { extlcd_pout = popen(extlcd_program, "w"); if (!extlcd_pout) { perror(extlcd_program); exit(1); } } void output_to_extlcd() { int i; fprintf(extlcd_pout, "%u %u ", rxpkt[1], rxpkt[2]); for (i = 3; i < rxpkt_len; i += 2) fprintf(extlcd_pout, "%02X%02X", rxpkt[i+1] ^ 0xFF, rxpkt[i] ^ 0xFF); fputc('\n', extlcd_pout); fflush(extlcd_pout); }