125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
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#include <string.h>
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#include "wm_include.h"
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#include "wm_demo.h"
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#include "wm_touchsensor.h"
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#include "wm_regs.h"
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#include "wm_irq.h"
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#include "wm_cpu.h"
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#include "wm_gpio.h"
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#include "wm_gpio_afsel.h"
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#if DEMO_TOUCHSENSOR
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#define KEY_PRESS_QUEUE_LENGTH (32)
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tls_os_queue_t *key_press_queue = NULL;
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#define KEY_PRESS_TASK_STACK 512
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u32 key_press_stack[KEY_PRESS_TASK_STACK];
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#define SCAN_PERIOD (1) //range [1, 63] unit:16ms
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#define SCAN_WINDOW (32) //range [3,63]
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#define TOUCH_BIAS (4) //range[1,7]
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//total touch number
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#define TOUCH_MAX_NUM (15)
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//different touch can use different limit
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u16 touch_limit[TOUCH_MAX_NUM] = {40, 30, 30, 30, 30, 30, 30, 30, 30, 30, 45, 35, 40, 30, 30};
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enum tls_io_name touchio[TOUCH_MAX_NUM] = {WM_IO_PA_07, WM_IO_PA_09, WM_IO_PA_10, /*touch 1-3*/
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WM_IO_PB_00, WM_IO_PB_01, WM_IO_PB_02, /*touch 4-6*/
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WM_IO_PB_03, WM_IO_PB_04, WM_IO_PB_05, /*touch 7-9*/
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WM_IO_PB_06, WM_IO_PB_07, WM_IO_PB_08, /*touch 10-12*/
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WM_IO_PB_09, WM_IO_PA_12, WM_IO_PA_14};/*touch 13-15*/
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void key_press_callback(u32 status)
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{
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if (key_press_queue)
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{
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tls_os_queue_send(key_press_queue,(void *)status,0);
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}
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}
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void key_press_task_hdl(void)
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{
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u32 *msg;
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u32 value = 0;
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int i = 0;
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for(;;)
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{
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tls_os_queue_receive(key_press_queue,(void * *)&msg,0,0);
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value = (u32)msg;
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for (i = 0; i < 15; i++)
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{
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if (value&(1<<i))
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{
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wm_printf("key %d\r\n is pressed\r\n", (i+1));
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}
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}
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}
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}
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/*test code
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You can call this function in function UserMain in main.c and when you touch the pad,you can find uart log printing from function tls_touchsensor_irq_handler.
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If the corresponding bit is set, this touch sensor has been touched.
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You can register your callback if need.
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*/
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void key_init(int touchnum)
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{
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int i = 0;
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/*deinit all touch sensor*/
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for (i = TOUCH_MAX_NUM; i > 0; i--)
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{
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tls_touchsensor_deinit(i);
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tls_gpio_cfg(touchio[i-1],WM_GPIO_DIR_OUTPUT, WM_GPIO_ATTR_FLOATING);
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}
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tls_touchsensor_scan_stop();
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for (i = 0; i < TOUCH_MAX_NUM; i++)
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{
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if ((touchnum == 0) || (touchnum & (1 << i)))
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{
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/*1)configure touch sensor IO multiplex.*/
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wm_touch_sensor_config(touchio[i]);
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/*2)set threshold each touch pad, you can set different threshold for each touch pad*/
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tls_touchsensor_threshold_config(i + 1, touch_limit[i]);
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tls_touchsensor_chan_config(i+1);
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/*3)enable touch sensor's irq , only enable specified irq bit, you can find the pad is touched by irq.*/
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tls_touchsensor_irq_enable(i + 1);
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}
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}
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/*4)init touch sensor's parameter, all touch sensor only can use the same configure parameter.
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user can adjust window,scan period and bias current*/
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tls_touchsensor_scan_config(SCAN_PERIOD, SCAN_WINDOW, TOUCH_BIAS);
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tls_touchsensor_scan_start();
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}
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void key_press_init(int touchnum)
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{
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if (key_press_queue == NULL)
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{
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tls_os_queue_create(&key_press_queue,KEY_PRESS_QUEUE_LENGTH);
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tls_os_task_create(NULL,NULL, (void *)key_press_task_hdl,NULL, (u8 *)&key_press_stack[0],KEY_PRESS_TASK_STACK*4,50,0);
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}
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tls_touchsensor_irq_register(key_press_callback);
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key_init(touchnum);
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}
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int demo_touchsensor(int touchnum)
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{
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if ((touchnum <= 65535) )
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{
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wm_printf("test touch:%x\r\n", touchnum);
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key_press_init(touchnum);
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}
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else
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{
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wm_printf("Usage: t-touch(0),t-touch(1),t-touch(3),t-touch(5)...t-touch(65535)\r\n");
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wm_printf(" 1)If you enable only one touch sensor, then touch sensor 1 must be used firstly.\r\n");
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wm_printf(" 2)You can set touchnum == 0 and enable all touch sensor.\r\n");
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}
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return 0;
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}
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#endif
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