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firmware: enable touch for T1

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This commit is contained in:
Pavol Rusnak 2018-10-02 18:08:05 +02:00
parent 96ddcf39df
commit ddbcd7400f
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GPG Key ID: 91F3B339B9A02A3D
6 changed files with 253 additions and 166 deletions
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1
embed/firmware/main.c
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@ -58,6 +58,7 @@ int main(void)
#if TREZOR_MODEL == 1
display_init();
touch_init();
#endif
#if TREZOR_MODEL == T

171
embed/trezorhal/touch.c
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@ -18,165 +18,13 @@
*/
#include STM32_HAL_H
#include <string.h>
#include "common.h"
#include "secbool.h"
#include "touch.h"
#define TOUCH_ADDRESS (0x38U << 1) // the HAL requires the 7-bit address to be shifted by one bit
#define TOUCH_PACKET_SIZE 7U
#define EVENT_PRESS_DOWN 0x00U
#define EVENT_CONTACT 0x80U
#define EVENT_LIFT_UP 0x40U
#define EVENT_NO_EVENT 0xC0U
#define GESTURE_NO_GESTURE 0x00U
#define X_POS_MSB (touch_data[3] & 0x0FU)
#define X_POS_LSB (touch_data[4])
#define Y_POS_MSB (touch_data[5] & 0x0FU)
#define Y_POS_LSB (touch_data[6])
static I2C_HandleTypeDef i2c_handle;
static void touch_default_pin_state(void) {
// set power off and other pins as per section 3.5 of FT6236 datasheet
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_10, GPIO_PIN_SET); // CTP_ON/PB10 (active low) i.e.- CTPM power off when set/high/log 1
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET); // CTP_I2C_SCL/PB6
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET); // CTP_I2C_SDA/PB7
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_4, GPIO_PIN_RESET); // CTP_INT/PC4 normally an input, but drive low as an output while powered off
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_RESET); // CTP_REST/PC5 (active low) i.e.- CTPM held in reset until released
// set above pins to OUTPUT / NOPULL
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Pin = GPIO_PIN_10 | GPIO_PIN_6 | GPIO_PIN_7;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.Pin = GPIO_PIN_4 | GPIO_PIN_5;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
// in-case power was on, or CTPM was active make sure to wait long enough
// for these changes to take effect. a reset needs to be low for
// a minimum of 5ms. also wait for power circuitry to stabilize (if it changed).
HAL_Delay(100); // 100ms (being conservative)
}
static void touch_active_pin_state(void) {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_10, GPIO_PIN_RESET); // CTP_ON/PB10
HAL_Delay(10); // we need to wait until the circuit fully kicks-in
GPIO_InitTypeDef GPIO_InitStructure;
// configure CTP I2C SCL and SDA GPIO lines (PB6 & PB7)
GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW; // I2C is a KHz bus and low speed is still good into the low MHz
GPIO_InitStructure.Alternate = GPIO_AF4_I2C1;
GPIO_InitStructure.Pin = GPIO_PIN_6 | GPIO_PIN_7;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
// PC4 capacitive touch panel module (CTPM) interrupt (INT) input
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
GPIO_InitStructure.Pull = GPIO_PULLUP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Pin = GPIO_PIN_4;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_SET); // release CTPM reset
HAL_Delay(310); // "Time of starting to report point after resetting" min is 300ms, giving an extra 10ms
}
void touch_init(void) {
touch_default_pin_state();
}
void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c) {
// enable I2C clock
__HAL_RCC_I2C1_CLK_ENABLE();
// GPIO have already been initialised by touch_init
}
void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c) {
__HAL_RCC_I2C1_CLK_DISABLE();
}
void touch_power_on(void) {
if (i2c_handle.Instance) {
return;
}
// turn on CTP circuitry
touch_active_pin_state();
HAL_Delay(50);
// I2C device interface configuration
i2c_handle.Instance = I2C1;
i2c_handle.Init.ClockSpeed = 400000;
i2c_handle.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
i2c_handle.Init.OwnAddress1 = 0xFE; // master
i2c_handle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
i2c_handle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
i2c_handle.Init.OwnAddress2 = 0;
i2c_handle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
i2c_handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_OK != HAL_I2C_Init(&i2c_handle)) {
ensure(secfalse, NULL);
return;
}
// set register 0xA4 G_MODE to interrupt polling mode (0x00). basically, CTPM keeps this input line (to PC4) low while a finger is on the screen.
uint8_t touch_panel_config[] = {0xA4, 0x00};
ensure(sectrue * (HAL_OK == HAL_I2C_Master_Transmit(&i2c_handle, TOUCH_ADDRESS, touch_panel_config, sizeof(touch_panel_config), 10)), NULL);
}
void touch_power_off(void) {
if (i2c_handle.Instance) {
HAL_I2C_DeInit(&i2c_handle);
i2c_handle.Instance = NULL;
}
// turn off CTP circuitry
HAL_Delay(50);
touch_default_pin_state();
}
uint32_t touch_read(void)
{
static uint8_t touch_data[TOUCH_PACKET_SIZE], previous_touch_data[TOUCH_PACKET_SIZE];
uint8_t outgoing[] = {0x00}; // start reading from address 0x00
if (HAL_OK != HAL_I2C_Master_Transmit(&i2c_handle, TOUCH_ADDRESS, outgoing, sizeof(outgoing), 1)) {
return 0;
}
if (HAL_OK != HAL_I2C_Master_Receive(&i2c_handle, TOUCH_ADDRESS, touch_data, TOUCH_PACKET_SIZE, 1)) {
return 0; // read failure
}
if (0 == memcmp(previous_touch_data, touch_data, TOUCH_PACKET_SIZE)) {
return 0; // polled and got the same event again
} else {
memcpy(previous_touch_data, touch_data, TOUCH_PACKET_SIZE);
}
const uint32_t number_of_touch_points = touch_data[2] & 0x0F; // valid values are 0, 1, 2 (invalid 0xF before first touch) (tested with FT6206)
const uint32_t event_flag = touch_data[3] & 0xC0;
if (touch_data[1] == GESTURE_NO_GESTURE) {
uint32_t xy = touch_pack_xy((X_POS_MSB << 8) | X_POS_LSB, (Y_POS_MSB << 8) | Y_POS_LSB);
if ((number_of_touch_points == 1) && (event_flag == EVENT_PRESS_DOWN)) {
return TOUCH_START | xy;
} else if ((number_of_touch_points == 1) && (event_flag == EVENT_CONTACT)) {
return TOUCH_MOVE | xy;
} else if ((number_of_touch_points == 0) && (event_flag == EVENT_LIFT_UP)) {
return TOUCH_END | xy;
}
}
return 0;
}
#if TREZOR_MODEL == T
#include "touch_t.h"
#elif TREZOR_MODEL == 1
#include "touch_1.h"
#endif
uint32_t touch_click(void)
{
@ -192,12 +40,3 @@ uint32_t touch_click(void)
// return last touch coordinate
return r;
}
uint32_t touch_is_detected(void)
{
// check the interrupt line coming in from the CTPM.
// the line goes low when a touch event is actively detected.
// reference section 1.2 of "Application Note for FT6x06 CTPM".
// we configure the touch controller to use "interrupt polling mode".
return GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_4);
}

48
embed/trezorhal/touch_1.h Normal file
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@ -0,0 +1,48 @@
#define BTN_PIN_LEFT GPIO_PIN_5
#define BTN_PIN_RIGHT GPIO_PIN_2
void touch_init(void) {
__HAL_RCC_GPIOC_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStructure;
// PC4 capacitive touch panel module (CTPM) interrupt (INT) input
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
GPIO_InitStructure.Pull = GPIO_PULLUP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Pin = BTN_PIN_LEFT | BTN_PIN_RIGHT;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
}
void touch_power_on(void) { }
void touch_power_off(void) { }
uint32_t touch_read(void)
{
static char last_left = 0, last_right = 0;
char left = (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOC, BTN_PIN_LEFT));
char right = (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOC, BTN_PIN_RIGHT));
if (last_left != left) {
last_left = left;
if (left) {
return TOUCH_START | touch_pack_xy(0, 63);
} else {
return TOUCH_END | touch_pack_xy(0, 63);
}
}
if (last_right != right) {
last_right = right;
if (right) {
return TOUCH_START | touch_pack_xy(127, 63);
} else {
return TOUCH_END | touch_pack_xy(127, 63);
}
}
return 0;
}
uint32_t touch_is_detected(void)
{
return (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOC, BTN_PIN_LEFT)) || (GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOC, BTN_PIN_RIGHT));
}

166
embed/trezorhal/touch_t.h Normal file
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@ -0,0 +1,166 @@
#include <string.h>
#include "common.h"
#include "secbool.h"
#define TOUCH_ADDRESS (0x38U << 1) // the HAL requires the 7-bit address to be shifted by one bit
#define TOUCH_PACKET_SIZE 7U
#define EVENT_PRESS_DOWN 0x00U
#define EVENT_CONTACT 0x80U
#define EVENT_LIFT_UP 0x40U
#define EVENT_NO_EVENT 0xC0U
#define GESTURE_NO_GESTURE 0x00U
#define X_POS_MSB (touch_data[3] & 0x0FU)
#define X_POS_LSB (touch_data[4])
#define Y_POS_MSB (touch_data[5] & 0x0FU)
#define Y_POS_LSB (touch_data[6])
static I2C_HandleTypeDef i2c_handle;
static void touch_default_pin_state(void) {
// set power off and other pins as per section 3.5 of FT6236 datasheet
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_10, GPIO_PIN_SET); // CTP_ON/PB10 (active low) i.e.- CTPM power off when set/high/log 1
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET); // CTP_I2C_SCL/PB6
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_7, GPIO_PIN_RESET); // CTP_I2C_SDA/PB7
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_4, GPIO_PIN_RESET); // CTP_INT/PC4 normally an input, but drive low as an output while powered off
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_RESET); // CTP_REST/PC5 (active low) i.e.- CTPM held in reset until released
// set above pins to OUTPUT / NOPULL
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Pin = GPIO_PIN_10 | GPIO_PIN_6 | GPIO_PIN_7;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.Pin = GPIO_PIN_4 | GPIO_PIN_5;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
// in-case power was on, or CTPM was active make sure to wait long enough
// for these changes to take effect. a reset needs to be low for
// a minimum of 5ms. also wait for power circuitry to stabilize (if it changed).
HAL_Delay(100); // 100ms (being conservative)
}
static void touch_active_pin_state(void) {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_10, GPIO_PIN_RESET); // CTP_ON/PB10
HAL_Delay(10); // we need to wait until the circuit fully kicks-in
GPIO_InitTypeDef GPIO_InitStructure;
// configure CTP I2C SCL and SDA GPIO lines (PB6 & PB7)
GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW; // I2C is a KHz bus and low speed is still good into the low MHz
GPIO_InitStructure.Alternate = GPIO_AF4_I2C1;
GPIO_InitStructure.Pin = GPIO_PIN_6 | GPIO_PIN_7;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
// PC4 capacitive touch panel module (CTPM) interrupt (INT) input
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
GPIO_InitStructure.Pull = GPIO_PULLUP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStructure.Pin = GPIO_PIN_4;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
HAL_GPIO_WritePin(GPIOC, GPIO_PIN_5, GPIO_PIN_SET); // release CTPM reset
HAL_Delay(310); // "Time of starting to report point after resetting" min is 300ms, giving an extra 10ms
}
void touch_init(void) {
touch_default_pin_state();
}
void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c) {
// enable I2C clock
__HAL_RCC_I2C1_CLK_ENABLE();
// GPIO have already been initialised by touch_init
}
void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c) {
__HAL_RCC_I2C1_CLK_DISABLE();
}
void touch_power_on(void) {
if (i2c_handle.Instance) {
return;
}
// turn on CTP circuitry
touch_active_pin_state();
HAL_Delay(50);
// I2C device interface configuration
i2c_handle.Instance = I2C1;
i2c_handle.Init.ClockSpeed = 400000;
i2c_handle.Init.DutyCycle = I2C_DUTYCYCLE_16_9;
i2c_handle.Init.OwnAddress1 = 0xFE; // master
i2c_handle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
i2c_handle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
i2c_handle.Init.OwnAddress2 = 0;
i2c_handle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
i2c_handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_OK != HAL_I2C_Init(&i2c_handle)) {
ensure(secfalse, NULL);
return;
}
// set register 0xA4 G_MODE to interrupt polling mode (0x00). basically, CTPM keeps this input line (to PC4) low while a finger is on the screen.
uint8_t touch_panel_config[] = {0xA4, 0x00};
ensure(sectrue * (HAL_OK == HAL_I2C_Master_Transmit(&i2c_handle, TOUCH_ADDRESS, touch_panel_config, sizeof(touch_panel_config), 10)), NULL);
}
void touch_power_off(void) {
if (i2c_handle.Instance) {
HAL_I2C_DeInit(&i2c_handle);
i2c_handle.Instance = NULL;
}
// turn off CTP circuitry
HAL_Delay(50);
touch_default_pin_state();
}
uint32_t touch_read(void)
{
static uint8_t touch_data[TOUCH_PACKET_SIZE], previous_touch_data[TOUCH_PACKET_SIZE];
uint8_t outgoing[] = {0x00}; // start reading from address 0x00
if (HAL_OK != HAL_I2C_Master_Transmit(&i2c_handle, TOUCH_ADDRESS, outgoing, sizeof(outgoing), 1)) {
return 0;
}
if (HAL_OK != HAL_I2C_Master_Receive(&i2c_handle, TOUCH_ADDRESS, touch_data, TOUCH_PACKET_SIZE, 1)) {
return 0; // read failure
}
if (0 == memcmp(previous_touch_data, touch_data, TOUCH_PACKET_SIZE)) {
return 0; // polled and got the same event again
} else {
memcpy(previous_touch_data, touch_data, TOUCH_PACKET_SIZE);
}
const uint32_t number_of_touch_points = touch_data[2] & 0x0F; // valid values are 0, 1, 2 (invalid 0xF before first touch) (tested with FT6206)
const uint32_t event_flag = touch_data[3] & 0xC0;
if (touch_data[1] == GESTURE_NO_GESTURE) {
uint32_t xy = touch_pack_xy((X_POS_MSB << 8) | X_POS_LSB, (Y_POS_MSB << 8) | Y_POS_LSB);
if ((number_of_touch_points == 1) && (event_flag == EVENT_PRESS_DOWN)) {
return TOUCH_START | xy;
} else if ((number_of_touch_points == 1) && (event_flag == EVENT_CONTACT)) {
return TOUCH_MOVE | xy;
} else if ((number_of_touch_points == 0) && (event_flag == EVENT_LIFT_UP)) {
return TOUCH_END | xy;
}
}
return 0;
}
uint32_t touch_is_detected(void)
{
// check the interrupt line coming in from the CTPM.
// the line goes low when a touch event is actively detected.
// reference section 1.2 of "Application Note for FT6x06 CTPM".
// we configure the touch controller to use "interrupt polling mode".
return GPIO_PIN_RESET == HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_4);
}

4
src1/main.py
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@ -1,3 +1,7 @@
import usb
usb.bus.open()
import trezorio as io
from trezorui import Display

29
src1/usb.py Normal file
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@ -0,0 +1,29 @@
import trezorio as io
iface_wire = io.WebUSB(
iface_num=0,
ep_in=0x81,
ep_out=0x01,
)
iface_vcp = io.VCP(
iface_num=2,
data_iface_num=3,
ep_in=0x83,
ep_out=0x03,
ep_cmd=0x84,
)
bus = io.USB(
vendor_id=0x1209,
product_id=0x53C1,
release_num=0x0100,
manufacturer="SatoshiLabs",
product="TREZOR",
interface="TREZOR Interface",
serial_number="1234",
usb21_landing=False,
)
bus.add(iface_wire)
bus.add(iface_vcp)