Add touch driver STMPE610 by lliypuk
This commit is contained in:
inmarket
parent
07a63f7143
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07707276f6
2
drivers/ginput/touch/STMPE610/driver.mk
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2
drivers/ginput/touch/STMPE610/driver.mk
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# List the required driver.
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GFXSRC += $(GFXLIB)/drivers/ginput/touch/STMPE610/gmouse_lld_STMPE610.c
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drivers/ginput/touch/STMPE610/gmouse_lld_STMPE610.c
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drivers/ginput/touch/STMPE610/gmouse_lld_STMPE610.c
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/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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#include "gfx.h"
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#if GFX_USE_GINPUT && GINPUT_NEED_MOUSE
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#define GMOUSE_DRIVER_VMT GMOUSEVMT_STMPE610
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#include "src/ginput/ginput_driver_mouse.h"
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// Hardware definitions
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#include "drivers/ginput/touch/STMPE610/stmpe610.h"
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// Get the hardware interface
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#include "gmouse_lld_STMPE610_board.h"
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// Extra settings for the users gfxconf.h file. See readme.txt
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#ifndef GMOUSE_STMPE610_SELF_CALIBRATE
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#define GMOUSE_STMPE610_SELF_CALIBRATE FALSE
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#endif
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#ifndef GMOUSE_STMPE610_READ_PRESSURE
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#define GMOUSE_STMPE610_READ_PRESSURE FALSE
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#endif
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#ifndef GMOUSE_STMPE610_TEST_MODE
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#define GMOUSE_STMPE610_TEST_MODE FALSE
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#endif
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/**
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* Notes:
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*
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* This chip has some problems which required careful coding to overcome.
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*
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* The interrupt pin seems to be unreliable, at least on some boards, so we at most
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* use the pin for filtering results to reduce cpu load.
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* The symptoms are that readings will just stop due to the irq not being asserted
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* even though there are items in the fifo. Another interrupt source such as a
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* touch transition will restart the irq.
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*
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* There is no fifo entry created when a touch up event occurs. We must therefore
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* generate a pseudo result on touch up. Fortunately the touch detection appears
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* reliable and so we turn off the driver GMOUSE_VFLG_POORUPDOWN setting. In practice
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* if touch is up we always return a pseudo event as this saves having to remember the
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* previous touch state.
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*
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* Z readings range from around 90 (fully touched) to around 150 (on the verge of non-touched).
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* Note the above is on the STM32F429i-Discovery board. Other boards may be different.
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* To be conservative we use 255 as touch off, anything else is a touch on.
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*
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* GMOUSE_STMPE610_TEST_MODE is designed to be used with the "touch_raw_readings" tool which shows
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* a steady stream of raw readings.
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*
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* Settings that may need tweaking on other hardware:
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* The settling times. We have set these conservatively at 1ms.
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* The reading window. We set this to 16 just to reduce noise. High-res panels may need a lower value.
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*/
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static bool_t MouseInit(GMouse* m, unsigned driverinstance) {
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if (!init_board(m, driverinstance))
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return FALSE;
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aquire_bus(m);
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write_reg(m, STMPE610_REG_SYS_CTRL1, 0x02); // Software chip reset
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gfxSleepMilliseconds(10);
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write_reg(m, STMPE610_REG_SYS_CTRL2, 0x04); // Temperature sensor clock off, GPIO clock off, touch clock on, ADC clock on
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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write_reg(m, STMPE610_REG_INT_EN, 0x03); // Interrupt on INT pin when there is a sample or a touch transition.
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#else
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write_reg(m, STMPE610_REG_INT_EN, 0x00); // Don't Interrupt on INT pin
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#endif
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write_reg(m, STMPE610_REG_ADC_CTRL1, 0x48); // ADC conversion time = 80 clock ticks, 12-bit ADC, internal voltage refernce
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gfxSleepMilliseconds(2);
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write_reg(m, STMPE610_REG_ADC_CTRL2, 0x01); // ADC speed 3.25MHz
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write_reg(m, STMPE610_REG_GPIO_AF, 0x00); // GPIO alternate function - OFF
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write_reg(m, STMPE610_REG_TSC_CFG, 0xA3); // Averaging 4, touch detect delay 1ms, panel driver settling time 1ms
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write_reg(m, STMPE610_REG_FIFO_TH, 0x01); // FIFO threshold = 1
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write_reg(m, STMPE610_REG_FIFO_STA, 0x01); // FIFO reset enable
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write_reg(m, STMPE610_REG_FIFO_STA, 0x00); // FIFO reset disable
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write_reg(m, STMPE610_REG_TSC_FRACT_XYZ, 0x07); // Z axis data format
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write_reg(m, STMPE610_REG_TSC_I_DRIVE, 0x01); // max 50mA touchscreen line current
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#if GMOUSE_STMPE610_READ_PRESSURE
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write_reg(m, STMPE610_REG_TSC_CTRL, 0x30); // X&Y&Z, 16 reading window
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write_reg(m, STMPE610_REG_TSC_CTRL, 0x31); // X&Y&Z, 16 reading window, TSC enable
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#else
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write_reg(m, STMPE610_REG_TSC_CTRL, 0x32); // X&Y, 16 reading window
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write_reg(m, STMPE610_REG_TSC_CTRL, 0x33); // X&Y, 16 reading window, TSC enable
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#endif
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write_reg(m, STMPE610_REG_INT_STA, 0xFF); // Clear all interrupts
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write_reg(m, STMPE610_REG_INT_CTRL, 0x01); // Level interrupt, enable interrupts
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release_bus(m);
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return TRUE;
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}
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static bool_t read_xyz(GMouse* m, GMouseReading* pdr)
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{
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#if GMOUSE_STMPE610_TEST_MODE
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static GMouseReading n;
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#endif
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uint8_t status;
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// Button information will be regenerated
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pdr->buttons = 0;
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#if GMOUSE_STMPE610_TEST_MODE
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aquire_bus(m);
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// Set the buttons to match various touch signals
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if ((read_byte(m, STMPE610_REG_TSC_CTRL) & 0x80))
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pdr->buttons |= 0x02;
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status = read_byte(m, STMPE610_REG_FIFO_STA);
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if (!(status & 0x20))
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pdr->buttons |= 0x04;
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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if (getpin_irq(m))
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pdr->buttons |= 0x08;
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#endif
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if ((status & 0x20)) {
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// Nothing in the fifo - just return the last position and pressure
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pdr->x = n.x;
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pdr->y = n.y;
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pdr->z = n.z;
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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write_reg(m, STMPE610_REG_INT_STA, 0xFF);
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#endif
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release_bus(m);
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return TRUE;
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}
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#else
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// Is there a new sample or a touch transition
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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if(!getpin_irq(m))
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return FALSE;
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#endif
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// Is there something in the fifo
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status = read_byte(m, STMPE610_REG_FIFO_STA);
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if ((status & 0x20)) {
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// Nothing in the fifo.
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// If not touched return the pseudo result
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if (!(read_byte(m, STMPE610_REG_TSC_CTRL) & 0x80)) {
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pdr->z = gmvmt(m)->z_min;
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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write_reg(m, STMPE610_REG_INT_STA, 0xFF);
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#endif
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release_bus(m);
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return TRUE;
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}
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// No new result
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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write_reg(m, STMPE610_REG_INT_STA, 0xFF);
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#endif
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release_bus(m);
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return FALSE;
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}
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#endif
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// Time to get some readings
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pdr->x = (coord_t)read_word(m, STMPE610_REG_TSC_DATA_X);
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pdr->y = (coord_t)read_word(m, STMPE610_REG_TSC_DATA_Y);
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#if GMOUSE_STMPE610_READ_PRESSURE
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pdr->z = (coord_t)read_byte(m, STMPE610_REG_TSC_DATA_Z);
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#else
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pdr->z = gmvmt(m)->z_max;
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#endif
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#if !GMOUSE_STMPE610_SLOW_CPU
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if (!(status & 0xC0)) {
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// Is there more data to come
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if (!(read_byte(m, STMPE610_REG_FIFO_STA) & 0x20))
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_gmouseWakeup(m);
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} else
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#endif
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// Clear the rest of the fifo
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{
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write_reg(m, STMPE610_REG_FIFO_STA, 0x01); // FIFO reset enable
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write_reg(m, STMPE610_REG_FIFO_STA, 0x00); // FIFO reset disable
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}
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// All done
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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write_reg(m, STMPE610_REG_INT_STA, 0xFF);
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#endif
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release_bus(m);
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#if GMOUSE_STMPE610_TEST_MODE
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// Save the result for later
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n.x = pdr->x;
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n.y = pdr->y;
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n.z = pdr->z;
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#endif
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// Rescale X,Y if we are using self-calibration
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// Not working currently.
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#if GMOUSE_STMPE610_SELF_CALIBRATE
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#if GDISP_NEED_CONTROL
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switch(gdispGGetOrientation(m->display)) {
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case GDISP_ROTATE_0:
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case GDISP_ROTATE_180:
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default:
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pdr->x = pdr->x / (4096/gdispGGetWidth(m->display));
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pdr->y = gdispGGetHeight(m->display) - pdr->y / (4096/gdispGGetHeight(m->display));
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case GDISP_ROTATE_90:
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case GDISP_ROTATE_270:
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pdr->x = pdr->x / (4096/gdispGGetHeight(m->display));
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pdr->y = gdispGGetWidth(m->display) - pdr->y / (4096/gdispGGetWidth(m->display));
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}
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#else
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pdr->x = gdispGGetWidth(m->display) - pdr->x / (4096/gdispGGetWidth(m->display));
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pdr->y = pdr->y / (4096/gdispGGetHeight(m->display));
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#endif
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#endif
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return TRUE;
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}
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const GMouseVMT const GMOUSE_DRIVER_VMT[1] = {{
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{
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GDRIVER_TYPE_TOUCH,
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#if GMOUSE_STMPE610_SELF_CALIBRATE
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GMOUSE_VFLG_TOUCH | GMOUSE_VFLG_ONLY_DOWN,
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#else
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GMOUSE_VFLG_TOUCH | GMOUSE_VFLG_ONLY_DOWN | GMOUSE_VFLG_CALIBRATE | GMOUSE_VFLG_CAL_TEST,
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#endif
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sizeof(GMouse) + GMOUSE_STMPE610_BOARD_DATA_SIZE,
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_gmouseInitDriver,
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_gmousePostInitDriver,
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_gmouseDeInitDriver
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},
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0, // z_max - 0 indicates full touch
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255, // z_min
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150, // z_touchon
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255, // z_touchoff
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{ // pen_jitter
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GMOUSE_STMPE610_PEN_CALIBRATE_ERROR, // calibrate
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GMOUSE_STMPE610_PEN_CLICK_ERROR, // click
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GMOUSE_STMPE610_PEN_MOVE_ERROR // move
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},
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{ // finger_jitter
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GMOUSE_STMPE610_FINGER_CALIBRATE_ERROR, // calibrate
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GMOUSE_STMPE610_FINGER_CLICK_ERROR, // click
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GMOUSE_STMPE610_FINGER_MOVE_ERROR // move
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},
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MouseInit, // init
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0, // deinit
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read_xyz, // get
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0, // calsave
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0 // calload
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}};
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#endif /* GFX_USE_GINPUT && GINPUT_NEED_MOUSE */
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/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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#ifndef _GINPUT_LLD_MOUSE_BOARD_H
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#define _GINPUT_LLD_MOUSE_BOARD_H
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// Resolution and Accuracy Settings
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#define GMOUSE_STMPE610_PEN_CALIBRATE_ERROR 8
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#define GMOUSE_STMPE610_PEN_CLICK_ERROR 6
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#define GMOUSE_STMPE610_PEN_MOVE_ERROR 4
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#define GMOUSE_STMPE610_FINGER_CALIBRATE_ERROR 14
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#define GMOUSE_STMPE610_FINGER_CLICK_ERROR 18
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#define GMOUSE_STMPE610_FINGER_MOVE_ERROR 14
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// How much extra data to allocate at the end of the GMouse structure for the board's use
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#define GMOUSE_STMPE610_BOARD_DATA_SIZE 0
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// Options - Leave these commented to make it user configurable in the gfxconf.h
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//#define GMOUSE_STMPE610_READ_PRESSURE FALSE
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//#define GMOUSE_STMPE610_SELF_CALIBRATE FALSE
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//#define GMOUSE_STMPE610_TEST_MODE FALSE
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// If TRUE this board has the STMPE610 IRQ pin connected to a GPIO.
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// Note: For tested hardware this is unreliable and should be set to FALSE until tested.
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// Symptoms are that mouse readings just appear to stop for a bit. Lifting the touch
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// and re-applying the touch cause readings to start again.
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#define GMOUSE_STMPE610_GPIO_IRQPIN FALSE
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// If TRUE this is a really slow CPU and we should always clear the FIFO between reads.
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#define GMOUSE_STMPE610_SLOW_CPU FALSE
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static bool_t init_board(GMouse* m, unsigned driverinstance) {
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}
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#if GMOUSE_STMPE610_GPIO_IRQPIN
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static bool_t getpin_irq(GMouse* m) {
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}
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#endif
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static inline void aquire_bus(GMouse* m) {
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}
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static inline void release_bus(GMouse* m) {
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}
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static void write_reg(GMouse* m, uint8_t reg, uint8_t val) {
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}
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static uint8_t read_byte(GMouse* m, uint8_t reg) {
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}
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static uint16_t read_word(GMouse* m, uint8_t reg) {
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}
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#endif /* _GINPUT_LLD_MOUSE_BOARD_H */
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11
drivers/ginput/touch/STMPE610/readme.txt
Normal file
11
drivers/ginput/touch/STMPE610/readme.txt
Normal file
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This driver has a number of optional settings which can be specified in gfxconf.h:
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#define GMOUSE_STMPE610_READ_PRESSURE TRUE
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Returns pressure values when the touch is down. On tested boards this ranges from 90 to 150. 255 is touch off.
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#define GMOUSE_STMPE610_SELF_CALIBRATE TRUE
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Scale the touch readings to avoid calibration. This is not as accurate as real calibration.
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#define GMOUSE_STMPE610_TEST_MODE TRUE
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Return raw readings for diagnostic use with the "touch_raw_readings" tool.
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70
drivers/ginput/touch/STMPE610/stmpe610.h
Normal file
70
drivers/ginput/touch/STMPE610/stmpe610.h
Normal file
@ -0,0 +1,70 @@
|
|||||||
|
/*
|
||||||
|
* 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://ugfx.org/license.html
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _STMPE610_H
|
||||||
|
#define _STMPE610_H
|
||||||
|
|
||||||
|
// Identification registers
|
||||||
|
#define STMPE610_REG_CHP_ID 0x00 // 16-bit
|
||||||
|
#define STMPE610_REG_ID_VER 0x02
|
||||||
|
|
||||||
|
// System registers
|
||||||
|
#define STMPE610_REG_SYS_CTRL1 0x03
|
||||||
|
#define STMPE610_REG_SYS_CTRL2 0x04
|
||||||
|
#define STMPE610_REG_SPI_CFG 0x08
|
||||||
|
|
||||||
|
// Interrupt control registers
|
||||||
|
#define STMPE610_REG_INT_CTRL 0x09
|
||||||
|
#define STMPE610_REG_INT_EN 0x0A
|
||||||
|
#define STMPE610_REG_INT_STA 0x0B
|
||||||
|
#define STMPE610_REG_GPIO_INT_EN 0x0C
|
||||||
|
#define STMPE610_REG_GPIO_INT_STA 0x0D
|
||||||
|
#define STMPE610_REG_ADC_INT_EN 0x0E
|
||||||
|
#define STMPE610_REG_ADC_INT_STA 0x0F
|
||||||
|
|
||||||
|
// GPIO registers
|
||||||
|
#define STMPE610_REG_GPIO_SET_PIN 0x10
|
||||||
|
#define STMPE610_REG_GPIO_CLR_PIN 0x11
|
||||||
|
#define STMPE610_REG_GPIO_MP_STA 0x12
|
||||||
|
#define STMPE610_REG_GPIO_DIR 0x13
|
||||||
|
#define STMPE610_REG_GPIO_ED 0x14
|
||||||
|
#define STMPE610_REG_GPIO_RE 0x15
|
||||||
|
#define STMPE610_REG_GPIO_FE 0x16
|
||||||
|
#define STMPE610_REG_GPIO_AF 0x17
|
||||||
|
|
||||||
|
// ADC registers
|
||||||
|
#define STMPE610_REG_ADC_CTRL1 0x20
|
||||||
|
#define STMPE610_REG_ADC_CTRL2 0x21
|
||||||
|
#define STMPE610_REG_ADC_CAPT 0x22
|
||||||
|
#define STMPE610_REG_ADC_DATA_CH0 0x30 // 16-bit
|
||||||
|
#define STMPE610_REG_ADC_DATA_CH1 0x32 // 16-bit
|
||||||
|
#define STMPE610_REG_ADC_DATA_CH4 0x38 // 16-bit
|
||||||
|
#define STMPE610_REG_ADC_DATA_CH5 0x3A // 16-bit
|
||||||
|
#define STMPE610_REG_ADC_DATA_CH6 0x3C // 16-bit
|
||||||
|
#define STMPE610_REG_ADC_DATA_CH7 0x3E // 16-bit
|
||||||
|
|
||||||
|
// Touchscreen registers
|
||||||
|
#define STMPE610_REG_TSC_CTRL 0x40
|
||||||
|
#define STMPE610_REG_TSC_CFG 0x41
|
||||||
|
#define STMPE610_REG_WDW_TR_X 0x42 // 16-bit
|
||||||
|
#define STMPE610_REG_WDW_TR_Y 0x44 // 16-bit
|
||||||
|
#define STMPE610_REG_WDW_BL_X 0x46 // 16-bit
|
||||||
|
#define STMPE610_REG_WDW_BL_Y 0x48 // 16-bit
|
||||||
|
#define STMPE610_REG_FIFO_TH 0x4A
|
||||||
|
#define STMPE610_REG_FIFO_STA 0x4B
|
||||||
|
#define STMPE610_REG_FIFO_SIZE 0x4C
|
||||||
|
#define STMPE610_REG_TSC_DATA_X 0x4D // 16-bit
|
||||||
|
#define STMPE610_REG_TSC_DATA_Y 0x4F // 16-bit
|
||||||
|
#define STMPE610_REG_TSC_DATA_Z 0x51
|
||||||
|
#define STMPE610_REG_TSC_DATA_XYZ 0x52 // 32-bit
|
||||||
|
#define STMPE610_REG_TSC_FRACT_XYZ 0x56
|
||||||
|
#define STMPE610_REG_TSC_DATA 0x57
|
||||||
|
#define STMPE610_REG_TSC_I_DRIVE 0x58
|
||||||
|
#define STMPE610_REG_TSC_SHIELD 0x59
|
||||||
|
|
||||||
|
|
||||||
|
#endif /* _STMPE610_H */
|
||||||
Loading…
Reference in New Issue
Block a user