diff options
Diffstat (limited to 'components/drivers/touch/touch.c')
| -rw-r--r-- | components/drivers/touch/touch.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/components/drivers/touch/touch.c b/components/drivers/touch/touch.c new file mode 100644 index 0000000000..37456609dc --- /dev/null +++ b/components/drivers/touch/touch.c @@ -0,0 +1,275 @@ +/* + * Copyright (c) 2006-2018, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2019-05-20 tyustli the first version + */ + +#include "touch.h" +#include <string.h> + +#define DBG_TAG "touch" +#define DBG_LVL DBG_INFO +#include <rtdbg.h> + +/* touch interrupt handler function */ +void rt_touch_cb(rt_touch_t touch) +{ + if (touch->parent.rx_indicate == RT_NULL) + { + return; + } + + if (touch->irq_handle != RT_NULL) + { + touch->irq_handle(touch); + } + + touch->parent.rx_indicate(&touch->parent, 1); +} + +/* ISR for touch interrupt */ +static void irq_callback(void *args) +{ + rt_touch_t touch; + + touch = (rt_touch_t)args; + + rt_touch_cb(touch); +} + +/* touch interrupt initialization function */ +static rt_err_t rt_touch_irq_init(rt_touch_t touch) +{ + if (touch->config.irq_pin.pin == RT_PIN_NONE) + { + return -RT_EINVAL; + } + + rt_pin_mode(touch->config.irq_pin.pin, touch->config.irq_pin.mode); + + if (touch->config.irq_pin.mode == PIN_MODE_INPUT_PULLDOWN) + { + rt_pin_attach_irq(touch->config.irq_pin.pin, PIN_IRQ_MODE_RISING, irq_callback, (void *)touch); + } + else if (touch->config.irq_pin.mode == PIN_MODE_INPUT_PULLUP) + { + rt_pin_attach_irq(touch->config.irq_pin.pin, PIN_IRQ_MODE_FALLING, irq_callback, (void *)touch); + } + else if (touch->config.irq_pin.mode == PIN_MODE_INPUT) + { + rt_pin_attach_irq(touch->config.irq_pin.pin, PIN_IRQ_MODE_RISING_FALLING, irq_callback, (void *)touch); + } + + rt_pin_irq_enable(touch->config.irq_pin.pin, PIN_IRQ_ENABLE); + + LOG_I("interrupt init success"); + + return 0; +} + +/* touch interrupt enable */ +static void rt_touch_irq_enable(rt_touch_t touch) +{ + if (touch->config.irq_pin.pin != RT_PIN_NONE) + { + rt_pin_irq_enable(touch->config.irq_pin.pin, RT_TRUE); + } +} + +/* touch interrupt disable */ +static void rt_touch_irq_disable(rt_touch_t touch) +{ + if (touch->config.irq_pin.pin != RT_PIN_NONE) + { + rt_pin_irq_enable(touch->config.irq_pin.pin, RT_FALSE); + } +} + +static rt_err_t rt_touch_open(rt_device_t dev, rt_uint16_t oflag) +{ + rt_touch_t touch; + RT_ASSERT(dev != RT_NULL); + touch = (rt_touch_t)dev; + + if (oflag & RT_DEVICE_FLAG_INT_RX && dev->flag & RT_DEVICE_FLAG_INT_RX) + { + /* Initialization touch interrupt */ + rt_touch_irq_init(touch); + } + + return RT_EOK; +} + +static rt_err_t rt_touch_close(rt_device_t dev) +{ + rt_touch_t touch; + RT_ASSERT(dev != RT_NULL); + touch = (rt_touch_t)dev; + + /* touch disable interrupt */ + rt_touch_irq_disable(touch); + + return RT_EOK; +} + +static rt_size_t rt_touch_read(rt_device_t dev, rt_off_t pos, void *buf, rt_size_t len) +{ + rt_touch_t touch; + rt_size_t result = 0; + RT_ASSERT(dev != RT_NULL); + touch = (rt_touch_t)dev; + + if (buf == NULL || len == 0) + { + return 0; + } + + result = touch->ops->touch_readpoint(touch, buf, len); + + return result; +} + +static rt_err_t rt_touch_control(rt_device_t dev, int cmd, void *args) +{ + rt_touch_t touch; + rt_err_t result = RT_EOK; + RT_ASSERT(dev != RT_NULL); + touch = (rt_touch_t)dev; + + switch (cmd) + { + case RT_TOUCH_CTRL_GET_ID: + if (args) + { + result = touch->ops->touch_control(touch, RT_TOUCH_CTRL_GET_ID, args); + } + else + { + result = RT_ERROR; + } + + break; + case RT_TOUCH_CTRL_GET_INFO: + if (args) + { + result = touch->ops->touch_control(touch, RT_TOUCH_CTRL_GET_INFO, args); + } + else + { + result = RT_ERROR; + } + + break; + case RT_TOUCH_CTRL_SET_MODE: + result = touch->ops->touch_control(touch, RT_TOUCH_CTRL_SET_MODE, args); + + if (result == RT_EOK) + { + rt_uint16_t mode; + mode = *(rt_uint16_t*)args; + if (mode == RT_DEVICE_FLAG_INT_RX) + { + rt_touch_irq_enable(touch); /* enable interrupt */ + } + } + + break; + case RT_TOUCH_CTRL_SET_X_RANGE: + result = touch->ops->touch_control(touch, RT_TOUCH_CTRL_SET_X_RANGE, args); + + if (result == RT_EOK) + { + touch->info.range_x = *(rt_int32_t *)args; + LOG_D("set x coordinate range :%d\n", touch->info.range_x); + } + + break; + case RT_TOUCH_CTRL_SET_Y_RANGE: + result = touch->ops->touch_control(touch, RT_TOUCH_CTRL_SET_Y_RANGE, args); + + if (result == RT_EOK) + { + touch->info.range_y = *(rt_uint32_t *)args; + LOG_D("set y coordinate range :%d \n", touch->info.range_x); + } + + break; + default: + return -RT_ERROR; + } + + return result; +} + +#ifdef RT_USING_DEVICE_OPS +const static struct rt_device_ops rt_touch_ops = +{ + RT_NULL, + rt_touch_open, + rt_touch_close, + rt_touch_read, + RT_NULL, + rt_touch_control +}; +#endif + +/* + * touch register + */ +int rt_hw_touch_register(rt_touch_t touch, + const char *name, + rt_uint32_t flag, + void *data) +{ + rt_int8_t result; + rt_device_t device; + RT_ASSERT(touch != RT_NULL); + + char *touch_name = RT_NULL; + char *device_name = RT_NULL; + + touch_name = "touch_"; + device_name = rt_calloc(1, rt_strlen(touch_name) + 1 + rt_strlen(name)); + + if (device_name == RT_NULL) + { + LOG_E("device_name calloc failed!"); + return -RT_ERROR; + } + + rt_memcpy(device_name, touch_name, rt_strlen(touch_name) + 1); + strcat(device_name, name); + + device = &touch->parent; + +#ifdef RT_USING_DEVICE_OPS + device->ops = &rt_touch_ops; +#else + device->init = RT_NULL; + device->open = rt_touch_open; + device->close = rt_touch_close; + device->read = rt_touch_read; + device->write = RT_NULL; + device->control = rt_touch_control; +#endif + device->type = RT_Device_Class_Touch; + device->rx_indicate = RT_NULL; + device->tx_complete = RT_NULL; + device->user_data = data; + + result = rt_device_register(device, device_name, flag | RT_DEVICE_FLAG_STANDALONE); + + if (result != RT_EOK) + { + LOG_E("rt_touch register err code: %d", result); + return result; + } + + LOG_I("rt_touch init success"); + + return RT_EOK; +} |