/**************************************************************************** * examples/touchscreen/tc_main.c * * Copyright (C) 2011, 2014-2025 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #ifdef CONFIG_EXAMPLES_TOUCHSCREEN_MOUSE # include #endif #include #include "tc.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Private Types ****************************************************************************/ /**************************************************************************** * Private Function Prototypes ****************************************************************************/ /**************************************************************************** * Private Data ****************************************************************************/ /**************************************************************************** * Public Data ****************************************************************************/ /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: tc_main ****************************************************************************/ #ifdef CONFIG_BUILD_KERNEL int main(int argc, FAR char *argv[]) #else int tc_main(int argc, char *argv[]) #endif { #ifdef CONFIG_EXAMPLES_TOUCHSCREEN_MOUSE struct mouse_report_s sample; #else struct touch_sample_s sample; #endif ssize_t nbytes; #if defined(CONFIG_NSH_BUILTIN_APPS) || CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES > 0 long nsamples; #endif int fd; int errval = 0; #ifdef CONFIG_EXAMPLES_TOUCHSCREEN_ARCHINIT int ret; #endif /* If this example is configured as an NX add-on, then limit the number of * samples that we collect before returning. Otherwise, we never return */ #if defined(CONFIG_NSH_BUILTIN_APPS) nsamples = 1; if (argc > 1) { nsamples = strtol(argv[1], NULL, 10); } printf("tc_main: nsamples: %d\n", nsamples); #elif CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES > 0 printf("tc_main: nsamples: %d\n", CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES); #endif #ifdef CONFIG_EXAMPLES_TOUCHSCREEN_ARCHINIT /* Initialization of the touchscreen hardware is performed by logic * external to this test. */ printf("tc_main: Initializing external touchscreen device\n"); ret = boardctl(BOARDIOC_TSCTEST_SETUP, CONFIG_EXAMPLES_TOUCHSCREEN_MINOR); if (ret != OK) { printf("tc_main: board_tsc_setup failed: %d\n", errno); errval = 1; goto errout; } #endif /* Open the touchscreen device for reading */ printf("tc_main: Opening %s\n", CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH); fd = open(CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, O_RDONLY); if (fd < 0) { printf("tc_main: open %s failed: %d\n", CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, errno); errval = 2; goto errout_with_tc; } /* Now loop the appropriate number of times, displaying the collected * touchscreen samples. */ #if defined(CONFIG_NSH_BUILTIN_APPS) for (; nsamples > 0; nsamples--) #elif CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES > 0 for (nsamples = 0; nsamples < CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES; nsamples++) #else for (;;) #endif { /* Flush any output before the loop entered or from the previous pass * through the loop. */ fflush(stdout); #ifdef CONFIG_EXAMPLES_TOUCHSCREEN_MOUSE /* Read one sample */ ivdbg("Reading...\n"); nbytes = read(fd, &sample, sizeof(struct mouse_report_s)); ivdbg("Bytes read: %d\n", nbytes); /* Handle unexpected return values */ if (nbytes < 0) { errval = errno; if (errval != EINTR) { printf("tc_main: read %s failed: %d\n", CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, errval); errval = 3; goto errout_with_dev; } printf("tc_main: Interrupted read...\n"); } else if (nbytes != sizeof(struct mouse_report_s)) { printf("tc_main: Unexpected read size=%d, expected=%d, Ignoring\n", nbytes, sizeof(struct mouse_report_s)); } /* Print the sample data on successful return */ else { printf("Sample :\n"); printf(" buttons : %02x\n", sample.buttons); printf(" x : %d\n", sample.x); printf(" y : %d\n", sample.y); #ifdef CONFIG_MOUSE_WHEEL printf(" wheel : %d\n", sample.wheel); #endif } #else /* Read one sample */ ivdbg("Reading...\n"); nbytes = read(fd, &sample, sizeof(struct touch_sample_s)); ivdbg("Bytes read: %d\n", nbytes); /* Handle unexpected return values */ if (nbytes < 0) { errval = errno; if (errval != EINTR) { printf("tc_main: read %s failed: %d\n", CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH, errval); errval = 3; goto errout_with_dev; } printf("tc_main: Interrupted read...\n"); } else if (nbytes != sizeof(struct touch_sample_s)) { printf("tc_main: Unexpected read size=%ld, expected=%d, Ignoring\n", (long)nbytes, sizeof(struct touch_sample_s)); } /* Print the sample data on successful return */ else { printf("Sample :\n"); printf(" npoints : %d\n", sample.npoints); printf("Point 1 :\n"); printf(" id : %d\n", sample.point[0].id); printf(" flags : %02x\n", sample.point[0].flags); printf(" x : %d\n", sample.point[0].x); printf(" y : %d\n", sample.point[0].y); printf(" h : %d\n", sample.point[0].h); printf(" w : %d\n", sample.point[0].w); printf(" pressure : %d\n", sample.point[0].pressure); } #endif } errout_with_dev: close(fd); errout_with_tc: #ifdef CONFIG_EXAMPLES_TOUCHSCREEN_ARCHINIT boardctl(BOARDIOC_TSCTEST_TEARDOWN, 0); errout: #endif printf("Terminating!\n"); fflush(stdout); return errval; }