diff options
Diffstat (limited to 'drivers/ginput/touch/FT5x06/ginput_lld_mouse.c')
| -rw-r--r-- | drivers/ginput/touch/FT5x06/ginput_lld_mouse.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/ginput/touch/FT5x06/ginput_lld_mouse.c b/drivers/ginput/touch/FT5x06/ginput_lld_mouse.c new file mode 100644 index 00000000..fd62e1e0 --- /dev/null +++ b/drivers/ginput/touch/FT5x06/ginput_lld_mouse.c @@ -0,0 +1,120 @@ +/* + * This file is subject to the terms of the GFX License. If a copy of + * the license was not distributed with this file, you can obtain one at: + * + * http://chibios-gfx.com/license.html + */ + +/** + * @file drivers/ginput/touch/STMPE811/ginput_lld_mouse.c + * @brief GINPUT Touch low level driver source for the STMPE811. + * + * @defgroup Mouse Mouse + * @ingroup GINPUT + * @{ + */ + +#include "ch.h" +#include "hal.h" +#include "gfx.h" + +#include "ft5x06.h" + +#if (GFX_USE_GINPUT && GINPUT_NEED_MOUSE) /*|| defined(__DOXYGEN__)*/ + +#include "ginput/lld/mouse.h" + +// include board abstraction +#include "ginput_lld_mouse_board.h" + +static coord_t x, y, z; +static uint8_t touched; + +/** + * @brief Initialise the mouse/touch. + * + * @notapi + */ +void ginput_lld_mouse_init(void) { + init_board(); + + // Init default values. (From NHD-3.5-320240MF-ATXL-CTP-1 datasheet) + // Valid touching detect threshold + write_reg(FT5x06_ID_G_THGROUP, 1, 0x16); + + // valid touching peak detect threshold + write_reg(FT5x06_ID_G_THPEAK, 1, 0x3C); + + // Touch focus threshold + write_reg(FT5x06_ID_G_THCAL, 1, 0xE9); + + // threshold when there is surface water + write_reg(FT5x06_ID_G_THWATER, 1, 0x01); + + // threshold of temperature compensation + write_reg(FT5x06_ID_G_THTEMP, 1, 0x01); + + // Touch difference threshold + write_reg(FT5x06_ID_G_THDIFF, 1, 0xA0); + + // Delay to enter 'Monitor' status (s) + write_reg(FT5x06_ID_G_TIME_ENTER_MONITOR, 1, 0x0A); + + // Period of 'Active' status (ms) + write_reg(FT5x06_ID_G_PERIODACTIVE, 1, 0x06); + + // Timer to enter ÔidleÕ when in 'Monitor' (ms) + write_reg(FT5x06_ID_G_PERIODMONITOR, 1, 0x28); +} + +/** + * @brief Read the mouse/touch position. + * + * @param[in] pt A pointer to the structure to fill + * + * @note For drivers that don't support returning a position + * when the touch is up (most touch devices), it should + * return the previous position with the new Z value. + * The z value is the pressure for those touch devices + * that support it (-100 to 100 where > 0 is touched) + * or, 0 or 100 for those drivers that don't. + * + * @notapi + */ +void ginput_lld_mouse_get_reading(MouseReading *pt) { + // Poll to get the touched status + uint8_t last_touched; + + last_touched = touched; + touched = (uint8_t)read_reg(FT5x06_TOUCH_POINTS, 1) & 0x07; + + // If not touched, return the previous results + if (touched == 0) { + pt->x = x; + pt->y = y; + pt->z = 0; + pt->buttons = 0; + return; + } + + /* Get the X, Y, Z values */ + x = (coord_t)(read_reg(FT5x06_TOUCH1_XH, 2) & 0x0fff); + y = (coord_t)read_reg(FT5x06_TOUCH1_YH, 2); + z = 100; + + // Rescale X,Y,Z - X & Y don't need scaling when you are using calibration! +#if !GINPUT_MOUSE_NEED_CALIBRATION + x = gdispGetWidth() - x / (4096/gdispGetWidth()); + y = y / (4096/gdispGetHeight()); +#endif + + // Return the results. ADC gives values from 0 to 2^12 (4096) + pt->x = x; + pt->y = y; + pt->z = z; + pt->buttons = GINPUT_TOUCH_PRESSED; +} + +#endif /* GFX_USE_GINPUT && GINPUT_NEED_MOUSE */ +/** @} */ + |