diff options
Diffstat (limited to 'fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/gui/wasm-runtime-wgl/src/platform/zephyr/XPT2046.c')
| -rw-r--r-- | fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/gui/wasm-runtime-wgl/src/platform/zephyr/XPT2046.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/gui/wasm-runtime-wgl/src/platform/zephyr/XPT2046.c b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/gui/wasm-runtime-wgl/src/platform/zephyr/XPT2046.c new file mode 100644 index 000000000..cdad9dac2 --- /dev/null +++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/gui/wasm-runtime-wgl/src/platform/zephyr/XPT2046.c @@ -0,0 +1,344 @@ +/** + * @file XPT2046.c + */ +/********************* + * INCLUDES + *********************/ +#include "XPT2046.h" +#include "board_config.h" +#include "stdio.h" +#include <string.h> +#include "drivers/spi.h" + +#include "zephyr.h" +#include "kernel.h" + +#if USE_XPT2046 + +#include <stddef.h> + +#define abs(x) ((x) < 0 ? -(x) : (x)) + +/********************* + * DEFINES + *********************/ + +/********************** + * TYPEDEFS + **********************/ + +/********************** + * STATIC PROTOTYPES + **********************/ +static void +xpt2046_corr(int16_t *x, int16_t *y); +#if 0 +static void xpt2046_avg(int16_t * x, int16_t * y); +#endif + +/********************** + * STATIC VARIABLES + **********************/ +int16_t avg_buf_x[XPT2046_AVG]; +int16_t avg_buf_y[XPT2046_AVG]; +uint8_t avg_last; + +/********************** + * MACROS + **********************/ + +/********************** + * GLOBAL FUNCTIONS + **********************/ + +/** + * Initialize the XPT2046 + */ +struct device *input_dev; + +struct spi_config spi_conf_xpt2046; +struct spi_cs_control xpt2046_cs_ctrl; +struct device *xpt2046_pen_gpio_dev; +static struct gpio_callback gpio_cb; +lv_indev_data_t touch_point; +lv_indev_data_t last_touch_point; + +#define TOUCH_READ_THREAD_STACK_SIZE 4096 +static K_THREAD_STACK_DEFINE(touch_read_thread_stack, + TOUCH_READ_THREAD_STACK_SIZE); +static struct k_thread touch_thread_data; +static struct k_sem sem_touch_read; + +K_MUTEX_DEFINE(spi_display_touch_mutex); + +int cnt = 0; +int touch_read_times = 0; +int last_pen_interrupt_time = 0; +void +xpt2046_pen_gpio_callback(struct device *port, struct gpio_callback *cb, + u32_t pins) +{ + cnt++; + if ((k_uptime_get_32() - last_pen_interrupt_time) > 500) { + k_sem_give(&sem_touch_read); + touch_read_times++; + last_pen_interrupt_time = k_uptime_get_32(); + } +} + +void +disable_pen_interrupt() +{ + int ret = 0; + ret = gpio_disable_callback(xpt2046_pen_gpio_dev, XPT2046_PEN_GPIO_PIN); + if (ret != 0) { + printf("gpio_pin_configure GPIO_INPUT failed\n"); + } +} +void +enable_pen_interrupt() +{ + int ret = 0; + ret = gpio_enable_callback(xpt2046_pen_gpio_dev, XPT2046_PEN_GPIO_PIN); + if (ret != 0) { + printf("gpio_pin_configure failed\n"); + } +} + +void +touch_screen_read_thread() +{ + int i; + bool ret = false; + + for (;;) { + k_sem_take(&sem_touch_read, K_FOREVER); + memset(&last_touch_point, 0, sizeof(lv_indev_data_t)); + memset(&touch_point, 0, sizeof(lv_indev_data_t)); + memset(avg_buf_x, 0, sizeof(avg_buf_x)); + memset(avg_buf_y, 0, sizeof(avg_buf_y)); + k_mutex_lock(&spi_display_touch_mutex, K_FOREVER); + disable_pen_interrupt(); + for (i = 0; i < 100; i++) { + ret = xpt2046_read(&touch_point); + if (ret) { + if ((abs(last_touch_point.point.x - touch_point.point.x) < 4) + && (abs(last_touch_point.point.y - touch_point.point.y) + < 4)) { + break; + } + last_touch_point = touch_point; + } + } + enable_pen_interrupt(); + k_mutex_unlock(&spi_display_touch_mutex); + } +} + +void +xpt2046_init(void) +{ + int ret; + input_dev = device_get_binding(XPT2046_SPI_DEVICE_NAME); + + if (input_dev == NULL) { + printf("device not found. Aborting test."); + return; + } + memset((void *)&touch_point, 0, sizeof(lv_indev_data_t)); + + spi_conf_xpt2046.frequency = XPT2046_SPI_MAX_FREQUENCY; + spi_conf_xpt2046.operation = SPI_OP_MODE_MASTER | SPI_WORD_SET(8); + spi_conf_xpt2046.slave = 0; + spi_conf_xpt2046.cs = NULL; +#ifdef XPT2046_CS_GPIO_CONTROLLER + xpt2046_cs_ctrl.gpio_dev = device_get_binding(XPT2046_CS_GPIO_CONTROLLER); + if (xpt2046_cs_ctrl.gpio_dev == NULL) { + printk("Cannot find %s!\n", XPT2046_CS_GPIO_CONTROLLER); + return; + } + gpio_pin_configure(xpt2046_cs_ctrl.gpio_dev, XPT2046_CS_GPIO_PIN, + GPIO_OUTPUT); + gpio_pin_set(xpt2046_cs_ctrl.gpio_dev, XPT2046_CS_GPIO_PIN, 1); + xpt2046_cs_ctrl.gpio_pin = XPT2046_CS_GPIO_PIN; + xpt2046_cs_ctrl.delay = 0; + spi_conf_xpt2046.cs = &xpt2046_cs_ctrl; + +#endif + +#ifdef XPT2046_PEN_GPIO_CONTROLLER + + xpt2046_pen_gpio_dev = device_get_binding(XPT2046_PEN_GPIO_CONTROLLER); + if (!xpt2046_pen_gpio_dev) { + printk("Cannot find %s!\n", XPT2046_PEN_GPIO_CONTROLLER); + return; + } + /* Setup GPIO input */ + ret = gpio_pin_configure(xpt2046_pen_gpio_dev, XPT2046_PEN_GPIO_PIN, + (GPIO_INPUT | GPIO_INT_ENABLE | GPIO_INT_EDGE + | GPIO_INT_LOW_0 | GPIO_INT_DEBOUNCE)); + if (ret) { + printk("Error configuring pin %d!\n", XPT2046_PEN_GPIO_PIN); + } + + gpio_init_callback(&gpio_cb, xpt2046_pen_gpio_callback, + BIT(XPT2046_PEN_GPIO_PIN)); + + ret = gpio_add_callback(xpt2046_pen_gpio_dev, &gpio_cb); + if (ret) { + printk("gpio_add_callback error\n"); + } + ret = gpio_enable_callback(xpt2046_pen_gpio_dev, XPT2046_PEN_GPIO_PIN); + if (ret) { + printk("gpio_enable_callback error\n"); + } +#endif + + k_sem_init(&sem_touch_read, 0, 1); + + k_thread_create(&touch_thread_data, touch_read_thread_stack, + TOUCH_READ_THREAD_STACK_SIZE, touch_screen_read_thread, + NULL, NULL, NULL, 5, 0, K_NO_WAIT); + printf("xpt2046_init ok \n"); +} + +/** + * Get the current position and state of the touchpad + * @param data store the read data here + * @return false: because no ore data to be read + */ +bool +xpt2046_read(lv_indev_data_t *data) +{ + static int16_t last_x = 0; + static int16_t last_y = 0; + bool valid = true; + int s32_ret = 0; + + int16_t x = 0; + int16_t y = 0; + + char tx1[16] = { 0 }; + char rx1[16] = { 0 }; + + struct spi_buf tx_buf = { .buf = &tx1, .len = 3 }; + struct spi_buf_set tx_bufs = { .buffers = &tx_buf, .count = 1 }; + struct spi_buf rx_buf = { .buf = &rx1, .len = 3 }; + struct spi_buf_set rx_bufs = { .buffers = &rx_buf, .count = 1 }; + + tx1[0] = CMD_X_READ; + s32_ret = spi_transceive(input_dev, &spi_conf_xpt2046, &tx_bufs, &rx_bufs); + if (s32_ret != 0) { + printf("spi_transceive return failed:%d\n", s32_ret); + } + x = rx1[1] << 8; + x += rx1[2]; + + tx1[0] = CMD_Y_READ; + s32_ret = spi_transceive(input_dev, &spi_conf_xpt2046, &tx_bufs, &rx_bufs); + if (s32_ret != 0) { + printf("spi_transceive return failed:%d\n", s32_ret); + } + y = rx1[1] << 8; + y += rx1[2]; + x = x >> 3; + y = y >> 3; + + xpt2046_corr(&x, &y); + if (y <= 0 || (x > 320)) { + valid = false; + } + + last_x = x; + last_y = y; + + data->point.x = x; + data->point.y = y; + data->state = valid == false ? LV_INDEV_STATE_REL : LV_INDEV_STATE_PR; + + return valid; +} + +/********************** + * STATIC FUNCTIONS + **********************/ +static void +xpt2046_corr(int16_t *x, int16_t *y) +{ +#if XPT2046_XY_SWAP != 0 + int16_t swap_tmp; + swap_tmp = *x; + *x = *y; + *y = swap_tmp; +#endif + + if ((*x) > XPT2046_X_MIN) + (*x) -= XPT2046_X_MIN; + else + (*x) = 0; + + if ((*y) > XPT2046_Y_MIN) + (*y) -= XPT2046_Y_MIN; + else + (*y) = 0; + + (*x) = (uint32_t)((uint32_t)(*x) * XPT2046_HOR_RES) + / (XPT2046_X_MAX - XPT2046_X_MIN); + + (*y) = (uint32_t)((uint32_t)(*y) * XPT2046_VER_RES) + / (XPT2046_Y_MAX - XPT2046_Y_MIN); + +#if XPT2046_X_INV != 0 + (*x) = XPT2046_HOR_RES - (*x); +#endif + +#if XPT2046_Y_INV != 0 + (*y) = XPT2046_VER_RES - (*y); +#endif +} + +#if 0 +static void xpt2046_avg(int16_t * x, int16_t * y) +{ + /*Shift out the oldest data*/ + uint8_t i; + for (i = XPT2046_AVG - 1; i > 0; i--) { + avg_buf_x[i] = avg_buf_x[i - 1]; + avg_buf_y[i] = avg_buf_y[i - 1]; + } + + /*Insert the new point*/ + avg_buf_x[0] = *x; + avg_buf_y[0] = *y; + if (avg_last < XPT2046_AVG) + avg_last++; + + /*Sum the x and y coordinates*/ + int32_t x_sum = 0; + int32_t y_sum = 0; + for (i = 0; i < avg_last; i++) { + x_sum += avg_buf_x[i]; + y_sum += avg_buf_y[i]; + } + + /*Normalize the sums*/ + (*x) = (int32_t) x_sum / avg_last; + (*y) = (int32_t) y_sum / avg_last; +} +#endif + +bool +touchscreen_read(lv_indev_data_t *data) +{ + /*Store the collected data*/ + data->point.x = last_touch_point.point.x; + data->point.y = last_touch_point.point.y; + data->state = last_touch_point.state; + + if (last_touch_point.state == LV_INDEV_STATE_PR) { + last_touch_point.state = LV_INDEV_STATE_REL; + } + return false; +} + +#endif |