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sensors.c
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sensors.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <linux/i2c-dev.h>
#include <linux/i2c.h>
#include <linux/ioctl.h>
#include <pthread.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <unistd.h>
#include "chipid.h"
#include "cjson/cJSON.h"
#include "hal/common.h"
#include "hal/xm.h"
#include "sensors.h"
#include "tools.h"
static read_register_t sensor_read_register;
static write_register_t sensor_write_register;
#define READ_0(addr) sensor_read_register(fd, i2c_addr, addr, 2, 1)
#define READ(addr) READ_0((addr) + 0x3000)
#ifndef STANDALONE_LIBRARY
#define SENSOR_ERR(name, code) \
fprintf(stderr, "Error: unexpected value for %s == 0x%x\n", name, code);
#else
#define SENSOR_ERR(name, code) \
do { \
} while (0)
#endif
#ifndef STANDALONE_LIBRARY
#define IMX219_TEMP 0x140
static int sony_imx219_tempc(int code) {
if (code < 6)
return -10;
if (code < 12)
return -5;
if (code < 18)
return 0;
if (code < 24)
return 5;
if (code < 30)
return 10;
if (code < 36)
return 15;
if (code < 43)
return 20;
if (code < 49)
return 25;
if (code < 55)
return 30;
if (code < 61)
return 35;
if (code < 67)
return 40;
if (code < 73)
return 45;
if (code < 79)
return 50;
if (code < 85)
return 55;
if (code < 91)
return 60;
if (code < 97)
return 65;
if (code < 104)
return 70;
if (code < 110)
return 75;
if (code < 116)
return 80;
if (code < 122)
return 85;
if (code < 128)
return 90;
return 95;
}
static void sony_imx219_params(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
cJSON *j_inner = cJSON_CreateObject();
sensor_write_register(fd, i2c_addr, IMX219_TEMP, 2, 0x80, 1);
// https://forums.developer.nvidia.com/t/i2c-regmap-read-issue/154601/4
usleep(500000);
int temp = sony_imx219_tempc(READ_0(IMX219_TEMP));
ADD_PARAM_NUM("temp", temp);
}
static int sony_imx291_fps(u_int8_t frsel, u_int16_t hmax) {
switch (frsel) {
case 2:
// 30/25
if (hmax == 0x1130)
return 30;
else if (hmax == 0x14A0)
return 25;
break;
case 1:
// 60/50
if (hmax == 0x0898)
return 60;
else if (hmax == 0x0A50)
return 50;
break;
case 0:
// 120/100
if (hmax == 0x044C)
return 120;
else if (hmax == 0x0528)
return 100;
break;
}
return 0;
}
static const char *sony_imx291_databus(int odbit) {
switch (odbit) {
case 0:
return "Parallel CMOS SDR";
case 0xD:
return "LVDS 2 ch";
case 0xE:
return "LVDS 4 ch";
case 0xF:
return "LVDS 8 ch";
default:
return NULL;
}
}
static void sony_imx291_params(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
cJSON *j_inner = cJSON_CreateObject();
int adbit = READ(0x5) & 1 ? 12 : 10;
ADD_PARAM_NUM("bitness", adbit);
ADD_PARAM("databus", sony_imx291_databus((READ(0x46) & 0xF0) >> 4));
int frsel = (READ(9) & 3);
int hmax = READ(0x1D) << 8 | READ(0x1C);
ADD_PARAM_NUM("fps", sony_imx291_fps(frsel, hmax));
ctx->j_params = j_inner;
}
#endif
static int detect_sony_sensor(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
// HINT: 0x3057 also can be used for IMX335 (chip_id == 0x07)
// OR 0x3415 == 0x20 && 0x3418 == 0x27
int chip_id = READ(0x57);
if (chip_id == 0x06) {
sprintf(ctx->sensor_id, "IMX347");
return true;
}
if (READ(0x41C) == 0x47) {
int r302E = READ(0x2E);
int r302F = READ(0x2F);
if (r302E == 0x18 && r302F == 0xF) {
sprintf(ctx->sensor_id, "IMX334");
return true;
}
}
// from IMX335 datasheet, p.40
// 316Ah - 2-6 bits are 1, 7 bit is 0
int r316A = READ(0x16A);
// early break
if (r316A == -1)
return false;
// HINT: possible check 0x316A == 0x7C && 0x3078 == 0x1
if (r316A > 0 && ((r316A & 0xFC) == 0x7C)) {
sprintf(ctx->sensor_id, "IMX335");
return true;
}
// Fixed to "40h"
if (READ(0x13) == 0x40) {
if (READ(0x4F) == 0x7) {
sprintf(ctx->sensor_id, "IMX323");
} else {
sprintf(ctx->sensor_id, "IMX322");
}
return true;
}
// from IMX415 datasheet, p.46
// 3B00h, Set to "2Eh", default value after reset is 28h
// HINT: possible check 0x300B == 0xA0 && 0x30C0 == 0x20
int r3B00 = READ(0xB00);
if (r3B00 == 0x2E || r3B00 == 0x28) {
sprintf(ctx->sensor_id, "IMX415");
return true;
}
// HINT: possible check 0x3015 == 0x3c
int r33B4 = READ(0x3B4);
if (r33B4 == 0x96 || r33B4 == 0xFE) {
sprintf(ctx->sensor_id, "IMX178");
return true;
}
if (READ(0x120) == 0x80 && READ(0x129) == 0xD) {
sprintf(ctx->sensor_id, "IMX274");
return true;
}
// HINT: possible check 0x303A == 0xC9
// OR 0x3012 == 0x50 && 0x3110 == 0XE
if (READ(0x15) == 0x3C) {
sprintf(ctx->sensor_id, "IMX185");
return true;
}
if (READ(0x5B8) == 0xFA) {
sprintf(ctx->sensor_id, "IMX294");
return true;
}
if (READ(0x1C) == 0x8B) {
sprintf(ctx->sensor_id, "IMX226");
return true;
}
if (READ(0xCE) == 0x16) {
sprintf(ctx->sensor_id, "IMX122");
return true;
}
// IMX326 too?
if (READ(0x45) == 0x32) {
sprintf(ctx->sensor_id, "IMX226");
return true;
}
int r31DC = READ(0x1DC);
if (r31DC != 0xFF) {
switch (r31DC & 6) {
case 4:
sprintf(ctx->sensor_id, "IMX307");
return true;
case 6:
// HINT: possible check 0x3004 == 0x10 && 0x3008 != 0xA0
sprintf(ctx->sensor_id, "IMX327");
return true;
default: {
if (READ(0x1E) == 0xB2 && READ(0x1F) == 0x1) {
int r309C = READ(0x9C);
switch (r309C) {
case 0x20:
case 0x22:
sprintf(ctx->sensor_id, "IMX291");
break;
case 0:
sprintf(ctx->sensor_id, "IMX290");
break;
default:
SENSOR_ERR("Sony29x", r309C);
return false;
}
#ifndef STANDALONE_LIBRARY
sony_imx291_params(ctx, fd, i2c_addr);
#endif
return true;
}
}
}
}
// special case for IMX219 (it has own chip id registers)
if (READ_0(0) == 0x2 && READ_0(1) == 0x19) {
sprintf(ctx->sensor_id, "IMX219");
#ifndef STANDALONE_LIBRARY
sony_imx219_params(ctx, fd, i2c_addr);
#endif
return true;
}
if (READ(0x4) == 0x10) {
if (READ(0xC) == 0 && READ(0xE) == 0x1) {
int r300D = READ(0xD);
int r3010 = READ(0x10);
if (r300D == 0x20 && r3010 == 0x39 && READ(0x6) == 0 &&
READ(0xF) == 0x1 && READ(0x12) == 0x50) {
sprintf(ctx->sensor_id, "IMX138");
return true;
}
if (r300D == 0 && r3010 == 0x1 && READ(0x11) == 0 &&
READ(0x1E) == 0x1 && READ(0x1F) == 0) {
if (READ(0x338) != 0) {
sprintf(ctx->sensor_id, "IMX385");
return true;
}
sprintf(ctx->sensor_id, "IMX225");
return true;
}
}
if (READ(0x9E) == 0x71) {
sprintf(ctx->sensor_id, "IMX123");
return true;
}
}
int r30A4 = READ(0xA4);
switch (r30A4 & 0xF0) {
case 0xA0:
if (READ(0xC44) == 6) {
sprintf(ctx->sensor_id, "IMX664");
return true;
}
// TODO: not tested yet
if (READ(0xC40) == 5) {
sprintf(ctx->sensor_id, "IMX662");
return true;
}
// TODO: not tested yet
if (READ(0xC7C) == 0x16) {
sprintf(ctx->sensor_id, "IMX675");
return true;
}
break;
case 0x20:
// TODO: not tested yet
if (READ(0x152) == 0x1E) {
sprintf(ctx->sensor_id, "IMX482");
return true;
}
}
return false;
}
// tested on H42, F22, F23, F37, H62, H65, K05
// TODO(FlyRouter): test on H81
static int detect_soi_sensor(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
// Product ID number (Read only)
int pid = i2c_read_register(fd, i2c_addr, 0xa, 1, 1);
// early break
if (pid == -1)
return false;
// Product version number (Read only)
int ver = i2c_read_register(fd, i2c_addr, 0xb, 1, 1);
switch (pid) {
case 0xf:
sprintf(ctx->sensor_id, "JXF%x", ver);
return true;
case 0xa0:
case 0xa:
sprintf(ctx->sensor_id, "JXH%x", ver);
return true;
case 0x5:
if (ver == 0x07)
sprintf(ctx->sensor_id, "JXQ03");
else
sprintf(ctx->sensor_id, "JXK%.2x", ver);
return true;
case 0x8:
if (ver == 0x43) {
sprintf(ctx->sensor_id, "JXQ03P");
return true;
} else if (ver == 0x41) {
sprintf(ctx->sensor_id, "JXF37P");
return true;
} else if (ver == 0x42) {
sprintf(ctx->sensor_id, "JXF53");
return true;
} else if (ver == 0x44) {
sprintf(ctx->sensor_id, "JXF38P");
return true;
}
// fall through
case 0:
// it can be another sensor type
case 0xff:
return false;
default:
SENSOR_ERR("SOI", (pid << 8) + ver);
return false;
}
}
// tested on AR0130
static int detect_onsemi_sensor(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
// sensor_write_register(0x301A, 1);
// msDelay(100);
int pid = i2c_read_register(fd, i2c_addr, 0x3000, 2, 2);
int sid = 0;
switch (pid) {
case 0x2402:
sid = 0x0130;
break;
case 0x256:
sid = 0x0237;
break;
case 0x2602:
sid = 0x0331;
break;
case 0x2604:
sid = 0x0330;
break;
case 0:
case 0xffffffff:
case 0xffff:
// no response
break;
default:
SENSOR_ERR("Aptina", pid);
return false;
}
if (sid) {
sprintf(ctx->sensor_id, "AR%04x", sid);
}
return sid;
}
static int detect_smartsens_sensor(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
// could be 0x3005 for SC1035, SC1145, SC1135
int high = i2c_read_register(fd, i2c_addr, 0x3107, 2, 1);
// early break
if (high == -1)
return false;
int lower = i2c_read_register(fd, i2c_addr, 0x3108, 2, 1);
if (lower == -1)
return false;
// check for SC1035, SC1145, SC1135 '0x3008' reg val is equal to 0x60
int res = high << 8 | lower;
switch (res) {
case 0x0010:
// aka fake Aptina AR0130
res = 0x1035;
break;
case 0x1045:
break;
case 0x1145:
break;
case 0x1235:
break;
case 0x1245: {
int sw = i2c_read_register(fd, i2c_addr, 0x3020, 2, 1);
sprintf(ctx->sensor_id, "SC2145H_%c", sw == 2 ? 'A' : 'B');
return true;
}
case 0x2032:
res = 0x2035;
break;
case 0x2045:
break;
case 0x2135:
break;
case 0x2145:
break;
case 0x2232: {
if (i2c_read_register(fd, i2c_addr, 0x3109, 2, 1) == 0x20)
strcpy(ctx->sensor_id, "SC2235E");
else // 0x01
strcpy(ctx->sensor_id, "SC2235P");
return true;
}
case 0x2235:
break;
case 0x2238:
// aka SC4239Р and SC307E
strcpy(ctx->sensor_id, "SC2315E");
return true;
case 0x2245:
res = 0x1145;
break;
case 0x2300:
// XM530
strcpy(ctx->sensor_id, "SC307P");
return true;
case 0x2310:
break;
case 0x2311:
// XM
strcpy(ctx->sensor_id, "SC2315");
return true;
case 0x2330:
strcpy(ctx->sensor_id, "SC307H");
case 0x3035:
break;
case 0x3235:
res = 0x4236;
break;
case 0x4210:
break;
case 0x4235:
res = 0x4238;
break;
case 0x5235:
break;
case 0x5300:
strcpy(ctx->sensor_id, "SC335E");
return true;
case 0xbd2f:
strcpy(ctx->sensor_id, "SC450AI");
return true;
case 0xca13:
// XM530
strcpy(ctx->sensor_id, "SC1335T");
return true;
case 0xca18:
// XM530
strcpy(ctx->sensor_id, "SC1330T");
return true;
case 0xcb07:
// aka SC307C
strcpy(ctx->sensor_id, "SC2232H");
return true;
case 0xcb08:
res = 0x2320;
break;
case 0xcb10:
res = 0x2239;
break;
case 0xcb14:
res = 0x2335;
break;
case 0xcb17:
if (strstr(getchipvendor(), VENDOR_INGENIC))
strcpy(ctx->sensor_id, "SC2332");
else
strcpy(ctx->sensor_id, "SC2232");
return true;
case 0xcb1c:
if (strstr(getchipvendor(), VENDOR_SSTAR))
strcpy(ctx->sensor_id, "SC200AI");
else
strcpy(ctx->sensor_id, "SC337H");
return true;
case 0xcc05:
// AKA AUGE
res = 0x3235;
break;
case 0xcc1a:
res = 0x3335;
break;
case 0xcc40:
strcpy(ctx->sensor_id, "SC301IoT");
return true;
case 0xcc41:
// XM530
res = 0x3338;
break;
case 0xcd01:
// XM
strcpy(ctx->sensor_id, "SC4335P");
return true;
case 0xcb3a:
// XM530
res = 0x2336;
break;
case 0xcb3e:
// XM
strcpy(ctx->sensor_id, "SC223A");
return true;
case 0xcd2e:
// XM
strcpy(ctx->sensor_id, "SC401AI");
return true;
case 0xce1a:
// XM
res = 0x5332;
break;
case 0xce1f:
// XM
strcpy(ctx->sensor_id, "SC501AI");
return true;
case 0xda23:
// XM 530
res = 0x1345;
return true;
case 0xdc42:
res = 0x4336;
return true;
case 0xbd1e:
strcpy(ctx->sensor_id, "SC850SL");
return true;
case 0:
case 0xffff:
// SC1135 catches here
return false;
default:
SENSOR_ERR("SmartSens", res);
return false;
}
sprintf(ctx->sensor_id, "SC%04x", res);
return true;
}
static int detect_omni_sensor(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
int prod_msb;
int prod_lsb;
int res;
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
// HISI_V2 needs width 2. Old OmniVision sensors do not provide mfg_id
// register.
prod_msb = i2c_read_register(fd, i2c_addr, 0x300A, 2, 1);
prod_lsb = i2c_read_register(fd, i2c_addr, 0x300B, 2, 1);
res = prod_msb << 8 | prod_lsb;
switch (res) {
case 0x2710:
case 0x2715:
case 0x2718:
case 0x5647:
case 0x9732:
sprintf(ctx->sensor_id, "OV%04x", res);
return true;
case 0x4688:
sprintf(ctx->sensor_id, "OV4689");
return true;
case 0x5303:
sprintf(ctx->sensor_id, "SP4329");
return true;
case 0x5305:
sprintf(ctx->sensor_id, "OS05A");
return true;
case 0x5308:
sprintf(ctx->sensor_id, "OS08A");
return true;
default:
break;
}
// Check OmniVision ManufacturerID
int mfg_msb = i2c_read_register(fd, i2c_addr, 0x301C, 1, 1);
int mfg_lsb = i2c_read_register(fd, i2c_addr, 0x301D, 1, 1);
if (mfg_msb == -1 || mfg_lsb == -1 || mfg_msb != 0x7f || mfg_lsb != 0xa2)
return false;
prod_msb = i2c_read_register(fd, i2c_addr, 0x300A, 1, 1);
// early break
if (prod_msb == -1)
return false;
prod_lsb = i2c_read_register(fd, i2c_addr, 0x300B, 1, 1);
if (prod_lsb == -1)
return false;
res = prod_msb << 8 | prod_lsb;
// skip empty result
if (!res)
return false;
// model mapping
switch (res) {
case 0x2770:
res = 0x2718;
break;
case 0x4688:
res = 0x4689;
break;
case 0x9711:
res = 0x9712;
break;
case 0x2710:
case 0x2715:
case 0x9732:
case 0x9750:
// for models with identical ID for model name
break;
case 0x5305:
sprintf(ctx->sensor_id, "OS05A");
break;
case 0:
case 0xffff:
return false;
default:
SENSOR_ERR("OmniVision", res);
return false;
}
sprintf(ctx->sensor_id, "OV%04x", res);
return true;
}
static int detect_galaxycore_sensor(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
int prod_msb = i2c_read_register(fd, i2c_addr, 0x3f0, 2, 1);
int prod_lsb = i2c_read_register(fd, i2c_addr, 0x3f1, 2, 1);
if (prod_msb == -1 || prod_lsb == -1) {
prod_msb = i2c_read_register(fd, i2c_addr, 0xf0, 1, 1);
prod_lsb = i2c_read_register(fd, i2c_addr, 0xf1, 1, 1);
}
if (prod_msb == -1 || prod_lsb == -1)
return false;
int res = prod_msb << 8 | prod_lsb;
switch (res) {
case 0x2053:
case 0x2083:
case 0x4023:
case 0x4653:
sprintf(ctx->sensor_id, "GC%04x", res);
return true;
}
prod_msb = i2c_read_register(fd, i2c_addr, 0xf0, 1, 1);
if (prod_msb == -1)
return false;
prod_lsb = i2c_read_register(fd, i2c_addr, 0xf1, 1, 1);
if (prod_lsb == -1)
return false;
res = prod_msb << 8 | prod_lsb;
if (!res)
return false;
switch (res) {
case 0x1004:
case 0x1024:
case 0x1034:
case 0x1054:
case 0x2023:
case 0x2033:
case 0x2053:
case 0x2063:
case 0x2083:
case 0x2093:
case 0x3003:
case 0x4023:
case 0x4653:
case 0x46c3:
case 0x5035:
sprintf(ctx->sensor_id, "GC%04x", res);
return true;
case 0xffff:
// no response
return false;
default:
SENSOR_ERR("GalaxyCore", res);
return false;
}
}
static int detect_superpix_sensor(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
// Set page 0
int page = i2c_read_register(fd, i2c_addr, 0xFD, 1, 1);
if (page > 0)
i2c_write_register(fd, i2c_addr, 0xFD, 1, 0x00, 2);
int prod_msb = i2c_read_register(fd, i2c_addr, 0x02, 1, 1);
if (prod_msb == -1)
return false;
int prod_lsb = i2c_read_register(fd, i2c_addr, 0x03, 1, 1);
if (prod_lsb == -1)
return false;
int res = prod_msb << 8 | prod_lsb;
if (!res)
return false;
switch (res) {
// Omnivision-SuperPix OV2735
case 0x2735:
sprintf(ctx->sensor_id, "OV%04x", res);
return true;
case 0x4308:
sprintf(ctx->sensor_id, "OS04B10");
return true;
case 0x5303:
sprintf(ctx->sensor_id, "OS03B10");
return true;
case 0x5602:
sprintf(ctx->sensor_id, "OS02G10");
return true;
}
prod_msb = i2c_read_register(fd, i2c_addr, 0xfa, 1, 1);
// early break
if (prod_msb == -1)
return false;
prod_lsb = i2c_read_register(fd, i2c_addr, 0xfb, 1, 1);
if (prod_lsb == -1)
return false;
res = prod_msb << 8 | prod_lsb;
if (!res)
return false;
switch (res) {
// hax, sensor doesnt seem to have id register
case 0x2073:
case 0x0000:
res = 0x2305;
break;
case 0xffff:
// no response
return false;
default:
SENSOR_ERR("SuperPix", res);
return false;
}
if (res) {
sprintf(ctx->sensor_id, "SP%04x", res);
}
return res;
}
static int detect_techpoint_adc(sensor_ctx_t *ctx, int fd,
unsigned char i2c_addr) {
if (i2c_change_addr(fd, i2c_addr) < 0)
return false;
int prod_msb = i2c_read_register(fd, i2c_addr, 0xfe, 1, 1);
if (prod_msb == -1)
return false;
int prod_lsb = i2c_read_register(fd, i2c_addr, 0xff, 1, 1);
if (prod_lsb == -1)
return false;
int res = prod_msb << 8 | prod_lsb;
if (!res)
return false;
else
sprintf(ctx->sensor_id, "TP%04x", res);
return res;
}
static int detect_possible_sensors(sensor_ctx_t *ctx, int fd,
int (*detect_fn)(sensor_ctx_t *ctx, int,
unsigned char),
int type) {
if (possible_i2c_addrs == NULL)
return false;
sensor_addr_t *sdata = possible_i2c_addrs;
while (sdata->sensor_type) {
if (sdata->sensor_type == type) {
unsigned char *addr = sdata->addrs;
while (*addr) {
if (detect_fn(ctx, fd, *addr)) {
ctx->addr = *addr;
return true;
};
addr++;
}
}
sdata++;
}
return false;
}
static bool get_sensor_id_i2c(sensor_ctx_t *ctx) {
bool detected = false;
int fd = open_i2c_sensor_fd();
if (fd == -1)
return false;
sensor_read_register = i2c_read_register;
sensor_write_register = i2c_write_register;
if (detect_possible_sensors(ctx, fd, detect_soi_sensor, SENSOR_SOI)) {
strcpy(ctx->vendor, "Silicon Optronics");
ctx->reg_width = 1;
detected = true;
} else if (detect_possible_sensors(ctx, fd, detect_onsemi_sensor,
SENSOR_ONSEMI)) {
strcpy(ctx->vendor, "ON Semiconductor");
ctx->data_width = 2;
detected = true;
} else if (detect_possible_sensors(ctx, fd, detect_omni_sensor,
SENSOR_OMNIVISION)) {
strcpy(ctx->vendor, "OmniVision");
detected = true;
} else if (detect_possible_sensors(ctx, fd, detect_sony_sensor,
SENSOR_SONY)) {
strcpy(ctx->vendor, "Sony");
detected = true;
} else if (detect_possible_sensors(ctx, fd, detect_smartsens_sensor,
SENSOR_SMARTSENS)) {
strcpy(ctx->vendor, "SmartSens");
detected = true;
} else if (detect_possible_sensors(ctx, fd, detect_galaxycore_sensor,
SENSOR_GALAXYCORE)) {
strcpy(ctx->vendor, "GalaxyCore");
ctx->reg_width = 1;
detected = true;
} else if (detect_possible_sensors(ctx, fd, detect_superpix_sensor,
SENSOR_SUPERPIX)) {
strcpy(ctx->vendor, "SuperPix");
ctx->reg_width = 1;
detected = true;
} else if (detect_possible_sensors(ctx, fd, detect_techpoint_adc,
SENSOR_TECHPOINT)) {
strcpy(ctx->vendor, "TechPoint");
detected = true;
}
exit:
close_sensor_fd(fd);
hal_cleanup();
return detected;
}
static int dummy_change_addr(int fd, unsigned char addr) {}
static bool get_sensor_id_spi(sensor_ctx_t *ctx) {
if (open_spi_sensor_fd == NULL || spi_read_register == NULL)
return false;
int fd = open_spi_sensor_fd();
if (fd < 0)
return false;
sensor_read_register = spi_read_register;
i2c_change_addr = dummy_change_addr;
int res = detect_sony_sensor(ctx, fd, 0);
if (res) {
strcpy(ctx->vendor, "Sony");
}
close(fd);
return res;
}
bool getsensorid(sensor_ctx_t *ctx) {
if (!getchipname())
return NULL;
// there is no platform specific i2c/spi access layer
if (!open_i2c_sensor_fd)
return NULL;
// Use common settings as default
ctx->data_width = 1;
ctx->reg_width = 2;
bool i2c_detected = get_sensor_id_i2c(ctx);
if (i2c_detected) {
strcpy(ctx->control, "i2c");
return true;
}
bool spi_detected = get_sensor_id_spi(ctx);
if (spi_detected) {
strcpy(ctx->control, "spi");
}