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MTK 9.0平台调试gsensor ----型号为:stk8baxx
1 查看原理图可以知道stk8baxx重力传感器 使用i2c1通道进行通讯,由于该重力传感器是不使用中断模式的进行触发的,所以不需要配置中断引脚。由此可以配置stk8baxx重力传感器的dtsdts文件配置如下:
dts文件路径为:\kernel-4.4\arch\arm\boot\dts\aiot8362am3_bsp.dts&gsensor_mtk{ status = "okay";};&i2c1 { clock-div = <2>; pinctrl-names = "default"; pinctrl-0 = <&i2c1_pins_a>; status = "okay"; clock-frequency = <400000>; stk8baxx@18{ compatible = "mediatek,stk8baxx"; reg = <0x18>; i2c_num = <1>; i2c_addr = <0x18 0 0 0>; direction = <0>; power_id = <0xffff>; power_vol = <0>; firlen = <0>; is_batch_supported = <0>; status = "okay"; };}
kernel-4.4\arch\arm\boot\dts\mt8167.dtsi
gsensor_mtk:gsensor@0 { compatible = "mediatek,gsensor"; };
2 配置aiot8362am3_bsp_defconfig和aiot8362am3_bsp_debug_defconfig文件以及配置相关的Makefile和Kconfig
2.1 配置aiot8362am3_bsp_defconfig和aiot8362am3_bsp_debug_defconfig文件
文件路径为: \kernel-4.4\arch\arm\configs\aiot8362am3_bsp_debug_defconfig 和\kernel4.4\arch\arm\configs\aiot8362am3_bsp_defconfig#g-sensorCONFIG_CUSTOM_KERNEL_ACCELEROMETER=yCONFIG_MTK_STK8BAXX=y
2.2 配置相关的Makefile和Kconfig
\kernel-4.4\drivers\misc\mediatek\sensors-1.0\accelerometer\Kconfig
source "drivers/misc/mediatek/sensors-1.0/accelerometer/stk8baxx/Kconfig"
kernel-4.4\drivers\misc\mediatek\sensors-1.0\accelerometer\Makefile
obj-$(CONFIG_MTK_STK8BAXX) += stk8baxx/
\kernel-4.4\drivers\misc\mediatek\sensors-1.0\accelerometer\stk8baxx\Kconfig
config MTK_STK8BAXX bool "MTK_STK8BAXX for MediaTek package" default n help The STK8BA50 is a highly integrated, low power internal measurement unit that provides precise acceleration measurement. this config will turn on accelerometer feature.
\kernel-4.4\drivers\misc\mediatek\sensors-1.0\accelerometer\stk8baxx\Makefile
ccflags-y += -I$(srctree)/drivers/misc/mediatek/sensors-1.0/accelerometer/incccflags-y += -I$(srctree)/drivers/misc/mediatek/sensors-1.0/hwmon/includeobj-y := stk8baxx.o
device\mediateksample\aiot8362am3_bsp\ProjectConfig.mk
CUSTOM_KERNEL_ACCELEROMETER = yes
3 把 stk8baxx.c放进去编译查看log发现 stk8baxx.cstk8baxx重力传感器i2c是能够通讯成功的,同时相关节点也产生了,由此可以验证stk8baxx重力传感器移植成功, log如下:
[ 0.402790] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_init 3463 start-----[ 0.408960] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_init 3463 start-----[ 1.326177] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3158 client->addr = 0x18 start-----[ 1.327289] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3167 client->addr = 0x18 start-----[ 1.328381] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3179 client->addr = 0x18 start-----[ 1.329477] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3184 client->addr = 0x18 start-----[ 1.330584] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3196 client->addr = 0x18 start-----[ 1.331809] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3201 client->addr = 0x18 start-----[ 1.333044] <3>.(3)[1:swapper/0]dsy:-------stk_polling_mode_setup 2501 start-----[ 1.333972] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3215 client->addr = 0x18 start no INTERRUPT_MODE -----[ 1.335267] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3220 client->addr = 0x18 start-----[ 1.336365] <3>.(3)[1:swapper/0]dsy:-------stk_reg_init 2539 start-----[ 1.341175] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3226 client->addr = 0x18 start-----[ 1.342303] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3241 client->addr = 0x18 start-----[ 1.343672] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3263 client->addr = 0x18 start-----[ 1.344779] <3>.(3)[1:swapper/0]dsy:-------stk8baxx_i2c_probe 3273 client->addr = 0x18 start-----[ 1.345878] <3>.(3)[1:swapper/0]BOOTPROF: 1345.877694:probe: probe=i2c_device_probe drv=stk8baxx(c0e43b70) 19.696616ms[ 23.837242] <3>.(3)[454:nvram_daemon]dsy:-------stk_factory_set_cali 3052 start-----[ 23.838215] <3>.(3)[454:nvram_daemon]dsy:-------stk_factory_set_cali 3071 start-----[ 23.839177] <3>.(3)[454:nvram_daemon]dsy:-------stk_writeCalibration 2966 start-----[ 23.840146] <3>.(3)[454:nvram_daemon]dsy:-------stk_readCalibration 2942 start-----[ 23.847060] <3>.(3)[454:nvram_daemon]dsy:-------stk_readCalibration 2951 start-----[ 23.848021] <3>.(3)[454:nvram_daemon]dsy:-------stk_writeCalibration 2972 start-----[ 23.848984] <3>.(3)[454:nvram_daemon]dsy:-------stk_writeCalibration 2984 start-----[ 51.778288] <2>.(2)[160:kworker/2:1]dsy:-------stk_read_accel_rawdata 961 start-----[ 51.779761] <2>.(2)[160:kworker/2:1]dsy:-------stk_low_pass_fir 882 start-----[ 51.844305] <2>.(2)[160:kworker/2:1]dsy:-------stk_read_accel_rawdata 961 start-----[ 51.846374] <2>.(2)[160:kworker/2:1]dsy:-------stk_low_pass_fir 882 start-----[ 51.912318] <2>.(2)[160:kworker/2:1]dsy:-------stk_read_accel_rawdata 961 start-----
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