现小弟有一块FT5316电容屏 使用的是荔枝派ZERO BSP内核
主要系统配置如下：
1，sys_config.fex
;----------------------------------------------------------------------------------
;capacitor tp configuration
;ctp_twi_id : twi controller ID
;ctp_twi_addr : I2C slave address, 7bit
;ctp_screen_max_x/_y : resolution of touch panel
;ctp_revert_x/_y_flag : whether need to revert x/y
;ctp_exchange_x_y_flag: whether need to exchange the value of x and y
;ctp_int_port : port for tp's interrupt signal
;ctp_wakeup : port for wakeup tp
;----------------------------------------------------------------------------------
[ctp_para]
ctp_used = 1
ctp_name = "ft5x_ts"
ctp_twi_id = 0
ctp_twi_addr = 0x38
ctp_screen_max_x = 800
ctp_screen_max_y = 480
ctp_revert_x_flag = 0
ctp_revert_y_flag = 0
ctp_exchange_x_y_flag = 1
ctp_int_port = port:PG04<6><default><default><default>
ctp_wakeup = port:PG03<1><default><default><1>2,内核编译选项：
CONFIG_TOUCHSCREEN_FT5X_TS: │
│ │
│ ft5x touchscreen driver │
│ │
│ Symbol: TOUCHSCREEN_FT5X_TS [=y] │
│ Type : tristate │
│ Prompt: ft5x touchscreen driver │
│ Defined at drivers/input/touchscreen/ft5x/Kconfig:5 │
│ Depends on: !S390 && !UML && INPUT_TOUCHSCREEN [=y] && INPUT [=y]\ │
│ && I2C [=y] │
│ Location: │
│ -> Device Drivers │
│ -> Input device support │
│ -> Generic input layer (needed for keyboard, mouse, ...) (INPUT │
│ -> Touchscreens (INPUT_TOUCHSCREEN [=y]) │
│ 配置过后能识别FT5316芯片
***CTP******************************init begin*************************************
[ 1.361434] =====ctp_fetch_sysconfig_para=====.
[ 1.366681] ctp_fetch_sysconfig_para: ctp_power_ldo script_get_item err.
[ 1.374446] ctp_fetch_sysconfig_para: ctp_power_ldo_vol script_get_item err.
[ 1.382491] ctp_fetch_sysconfig_para: ctp_power_io script_get_item err.
[ 1.390157] ctp_irq gpio number is 196
[ 1.394431] wakeup gpio_request is failed
[ 1.399088] ft5x_ts_init:ctp_ops.init_platform_resource err.
[ 1.399097] ***CTP***info.ctp_used:1
[ 1.399103] ***CTP***info.twi_id:0
[ 1.399109] ***CTP***info.screen_max_x:800
[ 1.399115] ***CTP***info.screen_max_y:480
[ 1.399121] ***CTP***info.revert_x_flag:0
[ 1.399127] ***CTP***info.revert_y_flag:0
[ 1.399133] ***CTP***info.exchange_x_y_flag:1
[ 1.399139] ***CTP***info.irq_gpio_number:196
[ 1.399145] ***CTP***info.wakeup_gpio_number:195
[ 1.399154] ***CTP******CTP*** ctp_wakeup:status:0,ms = 10
[ 1.400673] [mmc]: sdc0 set ios: clk 25000000Hz bm PP pm ON vdd 3.3V width 1 timing LEGACY(SDR12) dt B
[ 1.404182] [mmc]: sdc0 set ios: clk 25000000Hz bm PP pm ON vdd 3.3V width 1 timing SD-HS(SDR25) dt B
[ 1.404272] [mmc]: sdc0 set ios: clk 50000000Hz bm PP pm ON vdd 3.3V width 1 timing SD-HS(SDR25) dt B
[ 1.404382] [mmc]: sdc0 set ios: clk 50000000Hz bm PP pm ON vdd 3.3V width 4 timing SD-HS(SDR25) dt B
[ 1.404467] mmc0: new high speed SDHC card at address aaaa
[ 1.411123] mmcblk0: mmc0:aaaa SD32G 29.7 GiB
[ 1.417902] mmcblk0: p1 p2
[ 1.421990] mmcblk mmc0:aaaa: Card claimed for testing.
[ 1.427915] mmc0:aaaa: SD32G 29.7 GiB
[ 1.432458] i2c-core: driver [ft5x_ts] using legacy suspend method
[ 1.439430] i2c-core: driver [ft5x_ts] using legacy resume method
[ 1.446549] platform reg-20-cs-dcdc2: Driver reg-20-cs-dcdc2 requests probe deferral
[ 1.455308] *******************sd init ok*******************
[ 1.461888] platform reg-20-cs-dcdc3: Driver reg-20-cs-dcdc3 requests probe deferral
[ 1.470922] platform reg-20-cs-ldo1: Driver reg-20-cs-ldo1 requests probe deferral
[ 1.479487] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.479641] ***CTP***====ft5x_ts_probe begin=====.
[ 1.479821] ***CTP***====ft5x_init_events begin=====.
[ 1.480922] ***CTP***==ft5x_ts_probe over =
[ 1.480979] ***CTP*******************************init end************************************
[ 1.481034] sunxi-rtc sunxi-rtc: setting system clock to 1970-01-01 00:07:22 UTC (442)
[ 1.490318] platform reg-20-cs-ldo2: Driver reg-20-cs-ldo2 requests probe deferral
[ 1.498988] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.500426] ALSA device list:
[ 1.503851] #0: audiocodec
[ 1.507500] platform reg-20-cs-ldo3: Driver reg-20-cs-ldo3 requests probe deferral
[ 1.516475] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.517087] platform reg-20-cs-ldo4: Driver reg-20-cs-ldo4 requests probe deferral
[ 1.525891] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature incompatibilities
[ 1.535281] platform reg-20-cs-ldoio0: Driver reg-20-cs-ldoio0 requests probe deferral
[ 1.544343] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.544767] platform reg-20-cs-ldo1: Driver reg-20-cs-ldo1 requests probe deferral
[ 1.553531] EXT4-fs (mmcblk0p2): couldn't mount as ext2 due to feature incompatibilities
[ 1.562904] platform reg-20-cs-dcdc3: Driver reg-20-cs-dcdc3 requests probe deferral
[ 1.571764] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.572143] platform reg-20-cs-dcdc2: Driver reg-20-cs-dcdc2 requests probe deferral
[ 1.590376] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.600342] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 1.609515] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 1.616687] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.618908] devtmpfs: mounted
[ 1.622711] Freeing init memory: 140K
[ 1.630296] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.650311] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.670320] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.690312] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.710277] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.730329] ***CTP***addr:0x38,chip_id_value:0x0
[ 1.730346] ***CTP***read chip_id timers,timers=12
[ 1.730355] fts_ctpm_fw_upgrade_with_i_file.
[ 1.739529] EXT4-fs (mmcblk0p2): re-mounted. Opts: data=ordered
[ 1.840480] =========buf[0] = 0x0
[ 1.840495] =========buf[1] = 0x0
[ 1.840502] a == 0, b== 34
[ 1.900249] Step 1: Reset CTPM test
[ 1.940226] Step 2: Enter update mode.
[ 1.960229] Step 2: Enter update mode.
[ 1.980226] Step 2: Enter update mode.
[ 2.000237] Step 2: Enter update mode.
[ 2.020230] Step 2: Enter update mode.
[ 2.060461] Step 3: CTPM ID,ID1 = 0x79,ID2 = 0x7
[ 2.196175] gmac0: probed
[ 2.199384] platform reg-20-cs-dcdc2: Driver reg-20-cs-dcdc2 requests probe deferral
[ 2.208631] gmac0 gmac0: eth0: eth0: PHY ID 00441400 at 0 IRQ poll (gmac0-0:00)
[ 2.217125] platform reg-20-cs-dcdc3: Driver reg-20-cs-dcdc3 requests probe deferral
[ 2.236906] platform reg-20-cs-ldo1: Driver reg-20-cs-ldo1 requests probe deferral
[ 2.245842] platform reg-20-cs-ldoio0: Driver reg-20-cs-ldoio0 requests probe deferral
[ 2.260714] platform reg-20-cs-ldo4: Driver reg-20-cs-ldo4 requests probe deferral
[ 2.269333] platform reg-20-cs-ldo3: Driver reg-20-cs-ldo3 requests probe deferral
[ 2.282868] platform reg-20-cs-ldo2: Driver reg-20-cs-ldo2 requests probe deferral
[ 4.180019] Step 4: erase.
[ 4.180038] Step 5: start upgrade.
[ 4.220029] upgrade the 0x0 th byte.
[ 4.540020] upgrade the 0x400 th byte.
[ 4.860018] upgrade the 0x800 th byte.
[ 5.180028] upgrade the 0xc00 th byte.
[ 5.500023] upgrade the 0x1000 th byte.
[ 5.820019] upgrade the 0x1400 th byte.
[ 6.140018] upgrade the 0x1800 th byte.
[ 6.200157] PHY: gmac0-0:00 - Link is Up - 100/Full
[ 6.460019] upgrade the 0x1c00 th byte.
[ 6.780018] upgrade the 0x2000 th byte.
[ 7.100031] upgrade the 0x2400 th byte.
[ 7.420023] upgrade the 0x2800 th byte.
[ 7.740019] upgrade the 0x2c00 th byte.
[ 8.060018] upgrade the 0x3000 th byte.
[ 8.200145] PHY: gmac0-0:00 - Link is Down
[ 8.380030] upgrade the 0x3400 th byte.
[ 8.700019] upgrade the 0x3800 th byte.
[ 9.020019] upgrade the 0x3c00 th byte.
[ 9.200153] PHY: gmac0-0:00 - Link is Up - 100/Full
[ 9.340022] upgrade the 0x4000 th byte.
[ 9.660019] upgrade the 0x4400 th byte.
[ 9.980018] upgrade the 0x4800 th byte.
[ 10.300022] upgrade the 0x4c00 th byte.
[ 10.620017] upgrade the 0x5000 th byte.
[ 10.940018] upgrade the 0x5400 th byte.
[ 11.260022] upgrade the 0x5800 th byte.
[ 11.580047] upgrade the 0x5c00 th byte.
[ 11.900037] upgrade the 0x6000 th byte.
[ 12.220023] upgrade the 0x6400 th byte.
[ 12.590364] Step 6: ecc read 0xcb, new firmware 0xcb.
[ 12.900042] [FTS] upgrade successfully.---------------------------------------------------------
-------但是触摸没有反应，经测量没有中断信号！！！！
-----------------------------------
离线
强制短接线，将EINT管脚拉低，内核进入FT5X中断，但是读不到触摸信息
[ 21.107780] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.108808] ***CTP***touch point = 0
[ 21.108825] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.132772] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.133551] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.133805] ***CTP***touch point = 0
[ 21.133819] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.133949] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.134161] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.134809] ***CTP***touch point = 0
[ 21.134817] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.135017] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.135791] ***CTP***touch point = 0
[ 21.135798] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.135973] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.136780] ***CTP***touch point = 0
[ 21.136787] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.137767] ***CTP***touch point = 0
[ 21.137774] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.159013] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.159221] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.160263] ***CTP***touch point = 0
[ 21.160281] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.161272] ***CTP***touch point = 0
[ 21.161281] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.162057] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.163049] ***CTP***touch point = 0
[ 21.163058] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.163946] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.164928] ***CTP***touch point = 0
[ 21.164936] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.166723] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.167735] ***CTP***touch point = 0
[ 21.167743] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.167853] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.168839] ***CTP***touch point = 0
[ 21.168846] ***CTP***ft5x_ts_pen_irq_work:ret:1
[ 21.318312] ***CTP***==========ft5x_ts TS Interrupt============
[ 21.319318] ***CTP***touch point = 0
[ 21.319332] ***CTP***ft5x_ts_pen_irq_work:ret:1求教大佬，在荔枝派ZERO BSP 内核中如何使用触摸屏啊，GT911和FT5X都可以的，望赐教！！
离线
说明中断正常，看起来 i2c 通讯有问题，fex你先不配ft5x，用 i2ctools的 i2cdetect 看能否检测到0x38地址有反应？
感谢大佬指点，ft5x_probe 里面是有反应的，如果不挂iic或者iic通信错误 这个函数直接就报错了~
刚刚我的中断是我手动触发的，不是触摸屏触发的
我测试了一下触摸屏似乎不产生中断
离线
# i2cdump -f -y 0 0x38
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
读出来 全是0
离线