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                # 點屏之觸摸屏驅動 ## 電阻觸摸屏 Zero自帶電阻觸摸控制芯片ns2009,默認的內核里已經編譯了該驅動。 ### 設備樹節點 ~~~ &i2c0 { status = "okay"; ns2009: ns2009@48 { compatible = "nsiway,ns2009"; reg = <0x48>; }; }; ~~~ ### 觸摸使用 在默認內核配置中,lradc作為event0, ns2009作為event1。 使用前先使用ts_calibrate校準觸摸屏,用ts_test或者evtest測試觸摸情況。 ## 電容觸摸屏 群主使用過的兩種電容觸摸屏的配置方法如下: (引腳功能見 drivers/pinctrl/sunxi/pinctrl-sun8i-v3s.c) ~~~ &i2c0 { status = "okay"; atmel_mxt_ts@4a { compatible = "atmel,atmel_mxt_ts"; reg = <0x4a>; /*interrupt-parent = <&pio>; interrupts = <6 5 IRQ_TYPE_LEVEL_LOW>;*/ //省引腳,使用輪訓方式 }; }; ~~~ ~~~ &i2c0 { status = "okay"; goodix_ctp@5d { pinctrl-names = "default"; pinctrl-0 = <&gt911_int_primo81>; compatible = "goodix,gt911"; reg = <0x5d>; interrupt-parent = <&pio>; interrupts = <1 5 IRQ_TYPE_LEVEL_HIGH>; /* PB5 */ touchscreen-swapped-x-y; }; }; &pio { gt911_int_pin: gt911_int_pin@0 { pins = "PB5"; function = "gpio_in"; }; } ~~~ 編譯內核時選中對應驅動即可。
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