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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 | /* * Copyright (c) 2018 qianfan Zhao * Copyright (c) 2018 Nordic Semiconductor ASA * * SPDX-License-Identifier: Apache-2.0 */ #include <zephyr.h> #include <device.h> #include <drivers/gpio.h> #include <usb/usb_device.h> #include <usb/class/usb_hid.h> #define LOG_LEVEL LOG_LEVEL_DBG LOG_MODULE_REGISTER(main); /* change this to use another GPIO port */ #ifdef DT_ALIAS_SW0_GPIOS_CONTROLLER #define PORT0 DT_ALIAS_SW0_GPIOS_CONTROLLER #else #error DT_ALIAS_SW0_GPIOS_CONTROLLER needs to be set #endif /* change this to use another GPIO pin */ #ifdef DT_ALIAS_SW0_GPIOS_PIN #define PIN0 DT_ALIAS_SW0_GPIOS_PIN #else #error DT_ALIAS_SW0_GPIOS_PIN needs to be set #endif /* The switch pin pull-up/down flags */ #ifdef DT_ALIAS_SW0_GPIOS_FLAGS #define PIN0_FLAGS DT_ALIAS_SW0_GPIOS_FLAGS #else #error DT_ALIAS_SW0_GPIOS_FLAGS needs to be set #endif /* If second button exists, use it as right-click. */ #ifdef DT_ALIAS_SW1_GPIOS_PIN #define PIN1 DT_ALIAS_SW1_GPIOS_PIN #endif #ifdef DT_ALIAS_SW1_GPIOS_CONTROLLER #define PORT1 DT_ALIAS_SW1_GPIOS_CONTROLLER #endif #ifdef DT_ALIAS_SW1_GPIOS_FLAGS #define PIN1_FLAGS DT_ALIAS_SW1_GPIOS_FLAGS #endif /* If third button exists, use it as X axis movement. */ #ifdef DT_ALIAS_SW2_GPIOS_PIN #define PIN2 DT_ALIAS_SW2_GPIOS_PIN #endif #ifdef DT_ALIAS_SW2_GPIOS_CONTROLLER #define PORT2 DT_ALIAS_SW2_GPIOS_CONTROLLER #endif #ifdef DT_ALIAS_SW2_GPIOS_FLAGS #define PIN2_FLAGS DT_ALIAS_SW2_GPIOS_FLAGS #endif /* If fourth button exists, use it as Y axis movement. */ #ifdef DT_ALIAS_SW3_GPIOS_PIN #define PIN3 DT_ALIAS_SW3_GPIOS_PIN #endif #ifdef DT_ALIAS_SW3_GPIOS_CONTROLLER #define PORT3 DT_ALIAS_SW3_GPIOS_CONTROLLER #endif #ifdef DT_ALIAS_SW3_GPIOS_FLAGS #define PIN3_FLAGS DT_ALIAS_SW3_GPIOS_FLAGS #endif #define LED_PORT DT_ALIAS_LED0_GPIOS_CONTROLLER #define LED DT_ALIAS_LED0_GPIOS_PIN static const u8_t hid_report_desc[] = HID_MOUSE_REPORT_DESC(2); static u32_t def_val[4]; static volatile u8_t status[4]; static K_SEM_DEFINE(sem, 0, 1); /* starts off "not available" */ static struct gpio_callback callback[4]; static enum usb_dc_status_code usb_status; #define MOUSE_BTN_REPORT_POS 0 #define MOUSE_X_REPORT_POS 1 #define MOUSE_Y_REPORT_POS 2 #define MOUSE_BTN_LEFT BIT(0) #define MOUSE_BTN_RIGHT BIT(1) #define MOUSE_BTN_MIDDLE BIT(2) static void status_cb(enum usb_dc_status_code status, const u8_t *param) { usb_status = status; } static void left_button(struct device *gpio, struct gpio_callback *cb, u32_t pins) { u32_t cur_val; u8_t state = status[MOUSE_BTN_REPORT_POS]; if (IS_ENABLED(CONFIG_USB_DEVICE_REMOTE_WAKEUP)) { if (usb_status == USB_DC_SUSPEND) { usb_wakeup_request(); return; } } gpio_pin_read(gpio, PIN0, &cur_val); if (def_val[0] != cur_val) { state |= MOUSE_BTN_LEFT; } else { state &= ~MOUSE_BTN_LEFT; } if (status[MOUSE_BTN_REPORT_POS] != state) { status[MOUSE_BTN_REPORT_POS] = state; k_sem_give(&sem); } } #ifdef DT_ALIAS_SW1_GPIOS_PIN static void right_button(struct device *gpio, struct gpio_callback *cb, u32_t pins) { u32_t cur_val; u8_t state = status[MOUSE_BTN_REPORT_POS]; if (IS_ENABLED(CONFIG_USB_DEVICE_REMOTE_WAKEUP)) { if (usb_status == USB_DC_SUSPEND) { usb_wakeup_request(); return; } } gpio_pin_read(gpio, PIN1, &cur_val); if (def_val[0] != cur_val) { state |= MOUSE_BTN_RIGHT; } else { state &= ~MOUSE_BTN_RIGHT; } if (status[MOUSE_BTN_REPORT_POS] != state) { status[MOUSE_BTN_REPORT_POS] = state; k_sem_give(&sem); } } #endif #ifdef DT_ALIAS_SW2_GPIOS_PIN static void x_move(struct device *gpio, struct gpio_callback *cb, u32_t pins) { u32_t cur_val; u8_t state = status[MOUSE_X_REPORT_POS]; gpio_pin_read(gpio, PIN2, &cur_val); if (def_val[2] != cur_val) { state += 10U; } if (status[MOUSE_X_REPORT_POS] != state) { status[MOUSE_X_REPORT_POS] = state; k_sem_give(&sem); } } #endif #ifdef DT_ALIAS_SW3_GPIOS_PIN static void y_move(struct device *gpio, struct gpio_callback *cb, u32_t pins) { u32_t cur_val; u8_t state = status[MOUSE_Y_REPORT_POS]; gpio_pin_read(gpio, PIN3, &cur_val); if (def_val[3] != cur_val) { state += 10U; } if (status[MOUSE_Y_REPORT_POS] != state) { status[MOUSE_Y_REPORT_POS] = state; k_sem_give(&sem); } } #endif int callbacks_configure(struct device *gpio, u32_t pin, int flags, void (*handler)(struct device*, struct gpio_callback*, u32_t), struct gpio_callback *callback, u32_t *val) { if (!gpio) { LOG_ERR("Could not find PORT"); return -ENXIO; } gpio_pin_configure(gpio, pin, GPIO_DIR_IN | GPIO_INT | GPIO_INT_EDGE | GPIO_INT_DOUBLE_EDGE | flags); gpio_pin_read(gpio, pin, val); gpio_init_callback(callback, handler, BIT(pin)); gpio_add_callback(gpio, callback); gpio_pin_enable_callback(gpio, pin); return 0; } void main(void) { u8_t report[4] = { 0x00 }; u8_t toggle = 0U; struct device *led_dev, *hid_dev; led_dev = device_get_binding(LED_PORT); if (led_dev == NULL) { LOG_ERR("Cannot get LED"); return; } hid_dev = device_get_binding("HID_0"); if (hid_dev == NULL) { LOG_ERR("Cannot get USB HID Device"); return; } gpio_pin_configure(led_dev, LED, GPIO_DIR_OUT); if (callbacks_configure(device_get_binding(PORT0), PIN0, PIN0_FLAGS, &left_button, &callback[0], &def_val[0])) { LOG_ERR("Failed configuring left button callback."); return; } #ifdef DT_ALIAS_SW1_GPIOS_PIN if (callbacks_configure(device_get_binding(PORT1), PIN1, PIN1_FLAGS, &right_button, &callback[1], &def_val[1])) { LOG_ERR("Failed configuring right button callback."); return; } #endif #ifdef DT_ALIAS_SW2_GPIOS_PIN if (callbacks_configure(device_get_binding(PORT2), PIN2, PIN2_FLAGS, &x_move, &callback[2], &def_val[2])) { LOG_ERR("Failed configuring X axis movement callback."); return; } #endif #ifdef DT_ALIAS_SW3_GPIOS_PIN if (callbacks_configure(device_get_binding(PORT3), PIN3, PIN3_FLAGS, &y_move, &callback[3], &def_val[3])) { LOG_ERR("Failed configuring Y axis movement callback."); return; } #endif static const struct hid_ops ops = { .status_cb = status_cb }; usb_hid_register_device(hid_dev, hid_report_desc, sizeof(hid_report_desc), &ops); usb_hid_init(hid_dev); while (true) { k_sem_take(&sem, K_FOREVER); report[MOUSE_BTN_REPORT_POS] = status[MOUSE_BTN_REPORT_POS]; report[MOUSE_X_REPORT_POS] = status[MOUSE_X_REPORT_POS]; status[MOUSE_X_REPORT_POS] = 0U; report[MOUSE_Y_REPORT_POS] = status[MOUSE_Y_REPORT_POS]; status[MOUSE_Y_REPORT_POS] = 0U; hid_int_ep_write(hid_dev, report, sizeof(report), NULL); /* Toggle LED on sent report */ gpio_pin_write(led_dev, LED, toggle); toggle = !toggle; } } |