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Merge pull request #48 from resset/master 

STMPE811: working reading, writing and interrupt
ugfx_release_2.6
Tectu 2013-03-24 22:22:15 -07:00
parent a309a1d19f dd1eb6c63d
commit 2a00dd667d
5 changed files with 90 additions and 73 deletions
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69
drivers/ginput/touch/STMPE811/ginput_lld_mouse.c
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@ -37,12 +37,19 @@
#include "ginput/lld/mouse.h"
#if defined(GINPUT_MOUSE_USE_CUSTOM_BOARD) && GINPUT_MOUSE_USE_CUSTOM_BOARD
#include "ginput_lld_mouse_board.h"
#elif defined(BOARD_EMBEST_DMSTF4BB)
#include "ginput_lld_mouse_board_embest_dmstf4bb.h"
#else
#include "ginput_lld_mouse_board_example.h"
#endif
static coord_t lastx, lasty, lastz;
/* set the active window of the stmpe811. bl is bottom left, tr is top right */
static void setActiveWindow(uint16_t bl_x, uint16_t bl_y, uint16_t tr_x, uint16_t tr_y) {
static void setActiveWindow(uint16_t bl_x, uint16_t bl_y, uint16_t tr_x, uint16_t tr_y)
{
write_reg(STMPE811_REG_WDW_TR_X, 2, tr_x);
write_reg(STMPE811_REG_WDW_TR_Y, 2, tr_y);
write_reg(STMPE811_REG_WDW_BL_X, 2, bl_x);
@ -54,21 +61,22 @@ static void setActiveWindow(uint16_t bl_x, uint16_t bl_y, uint16_t tr_x, uint16_
*
* @notapi
*/
void ginput_lld_mouse_init(void) {
void ginput_lld_mouse_init(void)
{
init_board();
write_reg(STMPE811_REG_SYS_CTRL1, 1, 0x02); // Software chip reset
write_reg(STMPE811_REG_SYS_CTRL2, 1, 0x0C); // Temp. sensor clock off, GPIO clock off, touch clock on, ADC clock on
write_reg(STMPE811_REG_INT_EN, 1, 0x03); // Interrupt on INT pin when FIFO is equal or above threshold value OR touch is detected
write_reg(STMPE811_REG_ADC_CTRL1, 1, 0x48); // ADC conversion time = 80 clock ticks, 12-bit ADC, internaal voltage refernce
chThdSleepMilliseconds(10);
write_reg(STMPE811_REG_SYS_CTRL2, 1, 0x0C); // Temperature sensor clock off, GPIO clock off, touch clock on, ADC clock on
write_reg(STMPE811_REG_INT_EN, 1, 0x01); // Interrupt on INT pin when FIFO is equal or above threshold value OR touch is detected
write_reg(STMPE811_REG_ADC_CTRL1, 1, 0x48); // ADC conversion time = 80 clock ticks, 12-bit ADC, internaal voltage refernce
chThdSleepMilliseconds(2);
write_reg(STMPE811_REG_ADC_CTRL2, 1, 0x01); // ADC speed 3.25MHz
write_reg(STMPE811_REG_GPIO_AF, 1, 0x00); // GPIO alternate function - OFF
// @TODO: decide which value should STMPE811_REG_TSC_CFG have - either 0x9A or from comment;)
write_reg(STMPE811_REG_TSC_CFG, 1, 0x9A); // Averaging 4, Touch detect delay 1ms, Panel driver settling time 1ms
write_reg(STMPE811_REG_FIFO_TH, 1, 0x01); // FIFO threshold =1
write_reg(STMPE811_REG_TSC_CFG, 1, 0x9A); // Averaging 4, Touch detect delay 500 us, Panel driver settling time 500 us
write_reg(STMPE811_REG_FIFO_TH, 1, 0x01); // FIFO threshold = 1
write_reg(STMPE811_REG_FIFO_STA, 1, 0x01); // FIFO reset enable
write_reg(STMPE811_REG_FIFO_STA, 1, 0x00); // FIFO reset disable
write_reg(STMPE811_REG_TSC_FRACT_XYZ, 1, 0x07); // Z axis data format
@ -92,11 +100,13 @@ void ginput_lld_mouse_init(void) {
*
* @notapi
*/
void ginput_lld_mouse_get_reading(MouseReading *pt) {
void ginput_lld_mouse_get_reading(MouseReading *pt)
{
uint16_t buf;
uint8_t int_status;
// if not touched, return the previous results
if(!getpin_pressed()) {
// If not touched, return the previous results
if (!getpin_pressed()) {
pt->x = lastx;
pt->y = lasty;
pt->z = 0;
@ -104,25 +114,32 @@ void ginput_lld_mouse_get_reading(MouseReading *pt) {
return;
}
/* Get the X value */
buf = read_reg(STMPE811_REG_TSC_DATA_X, 2);
lastx = (coord_t)(buf);
// Find out what caused an interrupt
int_status = read_reg(STMPE811_REG_INT_STA, 1);
/* Get the Y value */
buf = read_reg(STMPE811_REG_TSC_DATA_Y, 2);
lasty = (coord_t)(buf);
// If it is TOUCH interrupt, clear it and go on
if (int_status & 0x01) {
write_reg(STMPE811_REG_INT_STA, 1, 0x01);
/* Get the Z value */
buf = read_reg(STMPE811_REG_TSC_DATA_Z, 1);
lastz = (buf & 0x00FF);
/* Get the X value */
buf = read_reg(STMPE811_REG_TSC_DATA_X, 2);
lastx = (coord_t)(buf);
// Return the results
pt->x = lastx;
pt->y = lasty;
pt->z = 100;
pt->buttons = GINPUT_TOUCH_PRESSED;
/* Get the Y value */
buf = read_reg(STMPE811_REG_TSC_DATA_Y, 2);
lasty = (coord_t)(buf);
/* Get the Z value */
buf = read_reg(STMPE811_REG_TSC_DATA_Z, 1);
lastz = (buf & 0x00FF);
// Return the results. ADC gives values from 0 to 2^12
pt->x = lastx / 13;
pt->y = lasty / 17;
pt->z = 100;
pt->buttons = GINPUT_TOUCH_PRESSED;
}
}
#endif /* GFX_USE_GINPUT && GINPUT_NEED_MOUSE */
/** @} */

42
drivers/ginput/touch/STMPE811/ginput_lld_mouse_board_embest_dmstf4bb.h
View File

@ -41,7 +41,8 @@ static const I2CConfig i2ccfg = {
*
* @notapi
*/
static void init_board(void) {
static void init_board(void)
{
palSetPadMode(GPIOC, 13, PAL_MODE_INPUT | PAL_STM32_PUDR_FLOATING); /* TP IRQ */
palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SCL */
palSetPadMode(GPIOB, 9, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN); /* SDA */
@ -50,8 +51,8 @@ static void init_board(void) {
}
/**
* @brief Check whether the surface is currently touched
* @return TRUE if the surface is currently touched
* @brief Check whether an interrupt is raised
* @return TRUE if there is an interrupt signal present
*
* @notapi
*/
@ -68,21 +69,21 @@ static inline bool_t getpin_pressed(void) {
*
* @notapi
*/
static void write_reg(uint8_t reg, uint8_t n, uint16_t val) {
uint8_t txbuf[2];
static void write_reg(uint8_t reg, uint8_t n, uint16_t val)
{
uint8_t txbuf[3];
i2cAcquireBus(&I2CD1);
txbuf[0] = reg;
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 1, NULL, 0, MS2ST(STMPE811_TIMEOUT));
if(n == 1) {
txbuf[0] = val;
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 1, NULL, 0, MS2ST(STMPE811_TIMEOUT));
} else if(n == 2) {
txbuf[0] = ((val & 0xFF00) >> 8);
txbuf[1] = (val & 0x00FF);
txbuf[0] = reg;
if (n == 1) {
txbuf[1] = val;
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 2, NULL, 0, MS2ST(STMPE811_TIMEOUT));
} else if (n == 2) {
txbuf[1] = ((val & 0xFF00) >> 8);
txbuf[2] = (val & 0x00FF);
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 3, NULL, 0, MS2ST(STMPE811_TIMEOUT));
}
i2cReleaseBus(&I2CD1);
@ -94,9 +95,12 @@ static void write_reg(uint8_t reg, uint8_t n, uint16_t val) {
* @param[in] reg The register address
* @param[in] n The amount of bytes (one or two)
*
* @return Data read from device (one byte or two depending on n param)
*
* @notapi
*/
static uint16_t read_reg(uint8_t reg, uint8_t n) {
static uint16_t read_reg(uint8_t reg, uint8_t n)
{
uint8_t txbuf[1], rxbuf[2];
uint16_t ret;
@ -106,13 +110,11 @@ static uint16_t read_reg(uint8_t reg, uint8_t n) {
i2cAcquireBus(&I2CD1);
txbuf[0] = reg;
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 1, rxbuf, 0, MS2ST(STMPE811_TIMEOUT));
i2cMasterTransmitTimeout(&I2CD1, STMPE811_ADDR, txbuf, 1, rxbuf, n, MS2ST(STMPE811_TIMEOUT));
if(n == 1) {
i2cMasterReceiveTimeout(&I2CD1, STMPE811_ADDR, rxbuf, 1, MS2ST(STMPE811_TIMEOUT));
if (n == 1) {
ret = rxbuf[0];
} else if(n == 2) {
i2cMasterReceiveTimeout(&I2CD1, STMPE811_ADDR, rxbuf, 2, MS2ST(STMPE811_TIMEOUT));
} else if (n == 2) {
ret = ((rxbuf[0] << 8) | (rxbuf[1] & 0xFF));
}

46
drivers/ginput/touch/STMPE811/ginput_lld_mouse_board_example.h
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@ -35,53 +35,53 @@
*
* @notapi
*/
static inline void init_board(void) {
static void init_board(void)
{
/* Code here */
#error "ginputSTMPE811: You must supply a definition for init_board for your board"
}
/**
* @brief Check whether the surface is currently touched
* @return TRUE if the surface is currently touched
* @brief Check whether an interrupt is raised
* @return TRUE if there is an interrupt signal present
*
* @notapi
*/
static inline bool_t getpin_pressed(void) {
static inline bool_t getpin_pressed(void)
{
/* Code here */
#error "ginputSTMPE811: You must supply a definition for getpin_pressed for your board"
}
/**
* @brief Aquire the bus ready for readings
* @brief Write a value into a certain register
*
* @param[in] reg The register address
* @param[in] n The amount of bytes (one or two)
* @param[in] val The value
*
* @notapi
*/
static inline void aquire_bus(void) {
static void write_reg(uint8_t reg, uint8_t n, uint16_t val)
{
/* Code here */
#error "ginputSTMPE811: You must supply a definition for aquire_bus for your board"
#error "ginputSTMPE811: You must supply a definition for write_reg for your board"
}
/**
* @brief Release the bus after readings
* @brief Read the value of a certain register
*
* @param[in] reg The register address
* @param[in] n The amount of bytes (one or two)
*
* @return Data read from device (one byte or two depending on n param)
*
* @notapi
*/
static inline void release_bus(void) {
static uint16_t read_reg(uint8_t reg, uint8_t n)
{
/* Code here */
#error "ginputSTMPE811: You must supply a definition for release_bus for your board"
}
/**
* @brief Read a value from touch controller
* @return The value read from the controller
*
* params[in] port The controller port to read.
*
* @notapi
*/
static inline uint16_t read_value(uint16_t port) {
/* Code here */
#error "ginputSTMPE811: You must supply a definition for read_value for your board"
#error "ginputSTMPE811: You must supply a definition for read_reg for your board"
}
#endif /* _GINPUT_LLD_MOUSE_BOARD_H */

5
drivers/ginput/touch/STMPE811/ginput_lld_mouse_config.h
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@ -31,10 +31,10 @@
#define _LLD_GINPUT_MOUSE_CONFIG_H
#define GINPUT_MOUSE_EVENT_TYPE GEVENT_TOUCH
#define GINPUT_MOUSE_NEED_CALIBRATION TRUE
#define GINPUT_MOUSE_NEED_CALIBRATION FALSE
#define GINPUT_MOUSE_LLD_CALIBRATION_LOADSAVE FALSE
#define GINPUT_MOUSE_MAX_CALIBRATION_ERROR 5
#define GINPUT_MOUSE_READ_CYCLES 4
#define GINPUT_MOUSE_READ_CYCLES 1//4
#define GINPUT_MOUSE_POLL_PERIOD 25
#define GINPUT_MOUSE_MAX_CLICK_JITTER 10
#define GINPUT_MOUSE_MAX_MOVE_JITTER 2
@ -42,4 +42,3 @@
#endif /* _LLD_GINPUT_MOUSE_CONFIG_H */
/** @} */

1
drivers/ginput/touch/STMPE811/stmpe811.h
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@ -102,4 +102,3 @@
#endif /* _STMPE811_H */
/** @} */