GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

sample/lsadc/sample_lsadc.c

@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) XMEDIA. All rights reserved.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+#include "adc.h"
+
+//#define USE_LSADC_CHANNEL_0
+
+#define DEV_FILE "/dev/lsadc"
+
+typedef enum {
+    LSADC_SCAN_MODE_SINGLE_STEP,
+    LSADC_SCAN_MODE_CONTINUOUS,
+    LSADC_SCAN_MODE_BUTT
+} lsadc_scan_mode;
+
+xmedia_s32 sample_lsadc_single_step_scan_mode(lsadc_scan_mode mode, xmedia_s32 chn)
+{
+    xmedia_s32 i, value;
+    xmedia_s32 fd  = open(DEV_FILE, O_RDWR);
+
+    if (fd < 0) {
+        fprintf(stderr, "fail to open file:%s\n", DEV_FILE);
+        return -1;
+    }
+
+    if(ioctl(fd, LSADC_IOC_MODEL_SEL, &mode) < 0) {
+        fprintf(stderr, "adc model select error.\n");
+        goto exit;
+    }
+
+    if(ioctl(fd, LSADC_IOC_CHN_ENABLE, &chn) < 0) {
+        fprintf(stderr, "enable chn %d error.\n", chn);
+        goto exit;
+    }
+
+
+    for(i=0; i < 20; i++) {
+        if(ioctl(fd, LSADC_IOC_START) < 0) {
+            fprintf(stderr, "start lsadc error.\n");
+            goto exit;
+        }
+
+        value = ioctl(fd, LSADC_IOC_GET_CHNVAL, &chn);
+        printf("get value:%d,chn[%d]\n", value,chn);
+        usleep(1000*1000);
+
+        if(ioctl(fd, LSADC_IOC_STOP) < 0) {
+            fprintf(stderr, "stop lsadc error.\n");
+        }
+    }
+
+exit:
+    if(ioctl(fd, LSADC_IOC_STOP) < 0) {
+        fprintf(stderr, "stop lsadc error.\n");
+    }
+
+    if(ioctl(fd, LSADC_IOC_CHN_DISABLE, &chn) < 0) {
+        fprintf(stderr, "disable chn %d error.\n", chn);
+    }
+
+    close(fd);
+    return 0;
+}
+
+xmedia_s32 sample_lsadc_continuous_scan_mode(lsadc_scan_mode mode, xmedia_s32 chn)
+{
+    xmedia_s32 i, value;
+    xmedia_s32 fd  = open(DEV_FILE, O_RDWR);
+
+    if (fd < 0) {
+        fprintf(stderr, "fail to open file:%s\n", DEV_FILE);
+        return -1;
+    }
+
+    if(ioctl(fd, LSADC_IOC_MODEL_SEL, &mode) < 0) {
+        fprintf(stderr, "adc model select error.\n");
+        goto exit;
+    }
+
+    if(ioctl(fd, LSADC_IOC_CHN_ENABLE, &chn) < 0) {
+        fprintf(stderr, "enable chn %d error.\n", chn);
+        goto exit;
+    }
+
+    if(ioctl(fd, LSADC_IOC_START) < 0) {
+        fprintf(stderr, "start lsadc error.\n");
+        goto exit;
+    }
+
+    for(i = 0; i < 20; i++) {
+        value = ioctl(fd, LSADC_IOC_GET_CHNVAL, &chn);
+        printf("get value:%d,chn[%d]\n", value,chn);
+        usleep(1000*1000);
+    }
+
+exit:
+    if(ioctl(fd, LSADC_IOC_STOP) < 0) {
+        fprintf(stderr, "stop lsadc error.\n");
+    }
+
+    if(ioctl(fd, LSADC_IOC_CHN_DISABLE, &chn) < 0) {
+        fprintf(stderr, "disable chn %d error.\n", chn);
+    }
+
+    close(fd);
+    return 0;
+}
+
+#ifdef __LITEOS__
+xmedia_s32 app_main(xmedia_s32 argc, char *argv[])
+#else
+xmedia_s32 main(xmedia_s32 argc, char* argv[])
+#endif
+{
+    lsadc_scan_mode mode = LSADC_SCAN_MODE_BUTT;
+    xmedia_s32 chn = 0;
+
+    printf("select scan mode:\n");
+    printf(" - [0] is single step scan mode\n");
+    printf(" - [1] is Continuous scan mode\n");
+
+    mode = getchar() - '0';
+
+    getchar();
+    printf("select ADC CHN:\n");
+#ifdef USE_LSADC_CHANNEL_0
+    printf(" - [0] is CHN[0]\n");
+#endif
+    printf(" - [1] is CHN[1]\n");
+    printf(" - [2] is CHN[2]\n");
+
+    chn = getchar() - '0';
+
+    switch (mode) {
+        case LSADC_SCAN_MODE_SINGLE_STEP:
+            sample_lsadc_single_step_scan_mode(mode, chn);
+            break;
+        case LSADC_SCAN_MODE_CONTINUOUS:
+            sample_lsadc_continuous_scan_mode(mode, chn);
+            break;
+        default:
+            printf("error scan mode\n");
+            break;
+    }
+    return 0;
+}
+