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add touch cst816t driver.
1 parent 997779e commit ee9a547

4 files changed

Lines changed: 209 additions & 3 deletions

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‎src/fw/board/board_sf32lb.h‎

Lines changed: 8 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -408,7 +408,14 @@ typedef const struct MicDevice MicDevice;
408408
typedef const struct QSPIPort QSPIPort;
409409
typedef const struct QSPIFlash QSPIFlash;
410410
typedef const struct ICE40LPDevice ICE40LPDevice;
411-
typedef const struct TouchSensor TouchSensor;
411+
412+
413+
typedef const struct TouchSensor {
414+
I2CSlavePort *i2c;
415+
InputConfig int_gpio;
416+
ExtiConfig int_exti;
417+
//OutputConfig reset_gpio;
418+
} TouchSensor;
412419

413420

414421
void board_early_init(void);

‎src/fw/board/boards/board_obelix_bb.c‎

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -225,6 +225,25 @@ ADCInputConfig adc1_ch0 ={
225225
};
226226

227227

228+
static const TouchSensor CST816_DEVICE = {
229+
.i2c = &I2C_SLAVE_TP_CST816,
230+
.int_gpio = {
231+
.gpio_pin = 27,
232+
},
233+
//.int_exti = {
234+
// .exti_port_source = EXTI_PortSourceGPIOB,
235+
// .exti_line = 7,
236+
//},
237+
};
238+
TouchSensor * const BOARD_CONFIG_TOUCH = &CST816_DEVICE;
239+
240+
241+
242+
243+
244+
245+
246+
228247
#define LCD_RESET_PIN (0) // GPIO_A00
229248
static void BSP_GPIO_Set(int pin, int val, int is_porta)
230249
{

‎src/fw/drivers/touch/cst816t/cst816t.c‎

Lines changed: 152 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,152 @@
1+
/*
2+
* Copyright 2024 Google LLC
3+
*
4+
* Licensed under the Apache License, Version 2.0 (the "License");
5+
* you may not use this file except in compliance with the License.
6+
* You may obtain a copy of the License at
7+
*
8+
* http://www.apache.org/licenses/LICENSE-2.0
9+
*
10+
* Unless required by applicable law or agreed to in writing, software
11+
* distributed under the License is distributed on an "AS IS" BASIS,
12+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
* See the License for the specific language governing permissions and
14+
* limitations under the License.
15+
*/
16+
#include "drivers/touch/touch_sensor.h"
17+
#include "board/board.h"
18+
#include "drivers/exti.h"
19+
#include "drivers/gpio.h"
20+
#include "drivers/i2c.h"
21+
#include "drivers/rtc.h"
22+
#include "drivers/ioexp.h"
23+
#include "kernel/events.h"
24+
#include "kernel/util/delay.h"
25+
#include "os/tick.h"
26+
#include "services/common/touch/touch.h"
27+
#include "system/logging.h"
28+
#include "system/passert.h"
29+
#include "util/attributes.h"
30+
#include "util/net.h"
31+
#include <stdint.h>
32+
33+
34+
////////////////////////////////////////////////////////////////////////////////
35+
#define TOUCH_EVENT_UP (0x01)
36+
#define TOUCH_EVENT_DOWN (0x02)
37+
#define TOUCH_EVENT_MOVE (0x03)
38+
typedef struct touch_message {
39+
GPoint point;
40+
uint8_t event;
41+
}touch_message_t ;
42+
43+
44+
////////////////////////////////////////////////////////////////////////////////
45+
static bool s_callback_scheduled = false;
46+
47+
static void cst816x_data_write(uint8_t reg, const uint8_t *data, uint32_t len) {
48+
i2c_use(BOARD_CONFIG_TOUCH->i2c);
49+
i2c_write_register_block(BOARD_CONFIG_TOUCH->i2c, reg, len, data);
50+
i2c_release(BOARD_CONFIG_TOUCH->i2c);
51+
}
52+
53+
static void cst816x_data_read(uint8_t reg, uint8_t *p_data, uint32_t len) {
54+
i2c_use(BOARD_CONFIG_TOUCH->i2c);
55+
i2c_read_register_block(BOARD_CONFIG_TOUCH->i2c, reg, len, p_data);
56+
i2c_release(BOARD_CONFIG_TOUCH->i2c);
57+
}
58+
59+
static void cst816x_register_write(uint8_t reg, uint8_t data)
60+
{
61+
i2c_use(BOARD_CONFIG_TOUCH->i2c);
62+
i2c_write_register_block(BOARD_CONFIG_TOUCH->i2c, reg, sizeof(data), &data);
63+
i2c_release(BOARD_CONFIG_TOUCH->i2c);
64+
}
65+
66+
static uint8_t cst816x_register_read(uint8_t reg)
67+
{
68+
uint8_t data = 0;
69+
i2c_use(BOARD_CONFIG_TOUCH->i2c);
70+
i2c_read_register_block(BOARD_CONFIG_TOUCH->i2c, reg, sizeof(data), &data);
71+
i2c_release(BOARD_CONFIG_TOUCH->i2c);
72+
return data;
73+
}
74+
75+
static void cst816x_read_point(touch_message_t* p_msg) {
76+
uint8_t rbuf[5] = {0};
77+
cst816x_data_read(0x02, rbuf, 5);
78+
79+
uint8_t press = rbuf[0] & 0x0F;
80+
if (press == 0x01) {
81+
p_msg->event = TOUCH_EVENT_DOWN;
82+
} else {
83+
p_msg->event = TOUCH_EVENT_UP;
84+
}
85+
p_msg->point.x = (((uint16_t)(rbuf[1] & 0x0F)) << 8) | rbuf[2];
86+
p_msg->point.y = (((uint16_t)(rbuf[3] & 0X0F)) << 8) | rbuf[4];
87+
}
88+
89+
90+
static void touch_cst816x_int_callback_function(void *context) {
91+
s_callback_scheduled = false;
92+
93+
touch_message_t msg;
94+
uint64_t now_ms = ticks_to_milliseconds(rtc_get_ticks());
95+
memset(&msg, 0, sizeof(msg));
96+
cst816x_read_point(&msg);
97+
if (msg.event == TOUCH_EVENT_DOWN) {
98+
touch_handle_update(0, TouchState_FingerDown, &msg.point, 0, now_ms);
99+
} else if (msg.event == TOUCH_EVENT_UP) {
100+
touch_handle_update(0, TouchState_FingerUp, NULL, 0, now_ms);
101+
} else {
102+
103+
}
104+
}
105+
106+
// @brief int function
107+
static void touch_cst816x_int_handle(bool *should_context_switch) {
108+
if (s_callback_scheduled) {
109+
return;
110+
}
111+
PebbleEvent e = {
112+
.type = PEBBLE_CALLBACK_EVENT,
113+
.callback.callback = touch_cst816x_int_callback_function
114+
};
115+
*should_context_switch = event_put_isr(&e);
116+
s_callback_scheduled = true;
117+
}
118+
119+
// @brief Initialization
120+
void touch_sensor_init(void) {
121+
#if 0
122+
gpio_input_init_pull_up_down(&BOARD_CONFIG_TOUCH->int_gpio, GPIO_PuPd_UP);
123+
124+
// reset
125+
// 拉高 1ms
126+
ioexp_pin_set(IOEXP_CH02, IOEXP_HIGH);
127+
delay_us(1*1000);
128+
// 拉低 10ms
129+
ioexp_pin_set(IOEXP_CH02, IOEXP_LOW);
130+
delay_us(10*1000);
131+
// 拉高
132+
ioexp_pin_set(IOEXP_CH02, IOEXP_HIGH);
133+
delay_us(50*1000);
134+
135+
// check
136+
uint8_t whoami;
137+
for (int i=0; i<5; ++i) {
138+
whoami = cst816x_register_read(0xA7);
139+
PBL_LOG(LOG_LEVEL_ALWAYS, "cst816x read chipid. chipid=0x%02x", whoami);
140+
if (whoami == 0x11) {
141+
break;
142+
}
143+
delay_us(10*1000);
144+
}
145+
146+
// initialize exti
147+
exti_configure_pin(BOARD_CONFIG_TOUCH->int_exti, ExtiTrigger_Falling, touch_cst816x_int_handle);
148+
exti_enable(BOARD_CONFIG_TOUCH->int_exti);
149+
PBL_LOG(LOG_LEVEL_DEBUG, "Initialized CST816 touch controller");
150+
#endif
151+
}
152+

‎src/fw/drivers/wscript_build‎

Lines changed: 30 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -214,6 +214,8 @@ elif bld.is_obelix():
214214
'driver_gpio_defaults',
215215
'driver_ioe',
216216
'driver_motor',
217+
'driver_imu',
218+
'driver_touch',
217219
],
218220
)
219221

@@ -242,6 +244,32 @@ if bld.env.BOARD == "obelix_bb":
242244
],
243245
)
244246

247+
if bld.env.BOARD == "obelix_bb":
248+
bld.objects(
249+
name='driver_imu',
250+
source=[
251+
'imu/imu_obelix_bb.c',
252+
'imu/mmc5603/mmc5603.c',
253+
],
254+
use=[
255+
'driver_mmc5603',
256+
'fw_includes',
257+
'root_includes',
258+
],
259+
)
260+
261+
if bld.env.BOARD == "obelix_bb":
262+
bld.objects(
263+
name='driver_touch',
264+
source=bld.path.ant_glob('touch/cst816t/*.c'),
265+
use=[
266+
'freertos',
267+
'fw_includes',
268+
'root_includes',
269+
],
270+
)
271+
272+
245273
## ----------
246274

247275
if bld.is_snowy_compatible() or bld.is_silk() or bld.is_cutts() or bld.is_robert():
@@ -1594,8 +1622,8 @@ if mcu_family == 'SF32LB':
15941622
'sf32lb/stubs/mcu.c',
15951623
'sf32lb/stubs/backlight.c',
15961624
'sf32lb/stubs/voltage_monitor.c',
1597-
'imu/imu_asterix.c',
1598-
'sf32lb/stubs/mag.c',
1625+
#'imu/imu_asterix.c',
1626+
#'sf32lb/stubs/mag.c',
15991627
'sf32lb/stubs/temperature.c',
16001628
'sf32lb/stubs/periph_config.c',
16011629
'sf32lb/stubs/gpio_defaults.c',

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