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Update cst340 driver to generic EXTI driver.
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@richardclli @pfeerick
richardclli authored and pfeerick committed Nov 10, 2023
1 parent bf62289 commit 25baa0f
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Showing 3 changed files with 84 additions and 151 deletions.
9 changes: 5 additions & 4 deletions radio/src/targets/pl18/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,6 @@ set(HARDWARE_EXTERNAL_MODULE YES)
set(WIRELESS_CHARGER YES)
set(TARGET_DIR pl18)

set(LINKER_SCRIPT targets/pl18/stm32f4_flash_bootloader.ld)

set(RTC_BACKUP_RAM YES)
set(PPM_LIMITS_SYMETRICAL YES)
# for size report script
Expand Down Expand Up @@ -100,10 +98,13 @@ set(SRC
set(GVAR_SCREEN model_gvars.cpp)

if(BOOTLOADER)
set(LINKER_SCRIPT targets/pl18/stm32f4_flash_bootloader.ld)
set(FIRMWARE_TARGET_SRC
${FIRMWARE_TARGET_SRC}
../common/arm/loadboot.cpp
)
else()
set(LINKER_SCRIPT targets/pl18/stm32f4_flash.ld)
endif()

set(SRC
Expand Down Expand Up @@ -133,12 +134,12 @@ set(FIRMWARE_TARGET_SRC
set(FIRMWARE_SRC
${FIRMWARE_SRC}
hal/adc_driver.cpp
targets/common/arm/stm32/stm32_adc.cpp
targets/common/arm/stm32/stm32_exti_driver.cpp
targets/common/arm/stm32/timers_driver.cpp
targets/common/arm/stm32/stm32_pulse_driver.cpp
targets/common/arm/stm32/stm32_usart_driver.cpp
targets/common/arm/stm32/trainer_driver.cpp
targets/common/arm/stm32/pwr_driver.cpp
targets/common/arm/stm32/trainer_driver.cpp
targets/common/arm/stm32/audio_dac_driver.cpp
targets/common/arm/stm32/spi_flash.cpp
targets/common/arm/stm32/diskio_spi_flash.cpp
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39 changes: 16 additions & 23 deletions radio/src/targets/pl18/hal.h
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Original file line number Diff line number Diff line change
Expand Up @@ -464,36 +464,29 @@
#define AUDIO_TIMER TIM6
#define AUDIO_DMA DMA1

// I2C Bus - Touch
#define I2C_B1_RCC_AHB1Periph RCC_AHB1Periph_GPIOB
#define I2C_B1_RCC_APB1Periph RCC_APB1Periph_I2C1
// I2C Bus
#define I2C_B1 I2C1
#define I2C_B1_GPIO GPIOB
#define I2C_B1_SDA_GPIO_PIN LL_GPIO_PIN_7 // PB.07
#define I2C_B1_SCL_GPIO_PIN LL_GPIO_PIN_8 // PB.08
#define I2C_B1_GPIO_AF GPIO_AF4_I2C1
//#define I2C_B1_SDA_GPIO_PinSource GPIO_PinSource7
//#define I2C_B1_SCL_GPIO_PinSource GPIO_PinSource8
//#define I2C_B1_CLK_RATE 100000
#define I2C_B1_GPIO_AF LL_GPIO_AF_4

#define TOUCH_I2C_BUS I2C_Bus_1
#define TOUCH_I2C_CLK_RATE 400000


#define TOUCH_RST_RCC_AHB1Periph RCC_AHB1Periph_GPIOB
#define TOUCH_RST_GPIO GPIOB
#define TOUCH_RST_GPIO_PIN LL_GPIO_PIN_12 // PB.12

#define TOUCH_INT_RCC_AHB1Periph RCC_AHB1Periph_GPIOB
// Touch
#define TOUCH_I2C_BUS I2C_Bus_1
#define TOUCH_I2C_CLK_RATE 400000
#define TOUCH_INT_GPIO GPIOB
#define TOUCH_INT_GPIO_PIN LL_GPIO_PIN_9 // PB.09
#define TOUCH_INT_EXTI_LINE1 LL_EXTI_LINE_9

#define TOUCH_INT_EXTI_Line LL_EXTI_LINE_9
#define TOUCH_INT_EXTI_Port LL_SYSCFG_EXTI_PORTB
#define TOUCH_INT_EXTI_SysCfgLine LL_SYSCFG_EXTI_LINE9
#define TOUCH_INT_EXTI_IRQn EXTI9_5_IRQn
#define TOUCH_INT_EXTI_IRQHandler EXTI9_5_IRQHandler
#define TOUCH_RST_GPIO GPIOB
#define TOUCH_RST_GPIO_PIN LL_GPIO_PIN_12 // PB.12
#define TOUCH_INT_EXTI_Line LL_EXTI_LINE_9
#define TOUCH_INT_EXTI_Port LL_SYSCFG_EXTI_PORTB
#define TOUCH_INT_EXTI_SysCfgLine LL_SYSCFG_EXTI_LINE9

// TOUCH_INT_EXTI IRQ
#if !defined(USE_EXTI9_5_IRQ)
#define USE_EXTI9_5_IRQ
#define EXTI9_5_IRQ_Priority 9
#endif

// Haptic: TIM1_CH1
#define HAPTIC_PWM
Expand Down
187 changes: 63 additions & 124 deletions radio/src/targets/pl18/tp_cst340.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,26 +21,21 @@

#include "stm32_hal_ll.h"
#include "stm32_hal.h"
#include "hal.h"

#include "stm32_i2c_driver.h"
#include "stm32_gpio_driver.h"
#include "stm32_exti_driver.h"

#include "hal.h"
#include "timers_driver.h"
#include "delays_driver.h"
#include "tp_cst340.h"

#include "debug.h"

volatile static bool touchEventOccured;

#define TOUCH_RCC_AHB1Periph RCC_AHB1Periph_GPIOB
#define TOUCH_RCC_APB1Periph RCC_APB1Periph_I2C1
#define TOUCH_GPIO I2C_B1_GPIO
#define TOUCH_SCL_GPIO_PIN I2C_B1_SCL_GPIO_PIN // PB.08
#define TOUCH_SDA_GPIO_PIN I2C_B1_SDA_GPIO_PIN // PB.09

#define TOUCH_FT6236_I2C_ADDRESS (0x70>>1)
#define TOUCH_CST340_I2C_ADDRESS 0x1A

volatile static bool touchEventOccured;
enum TouchControllers {TC_NONE, TC_FT6236, TC_CST340};
TouchControllers touchController = TC_NONE;

Expand All @@ -63,129 +58,69 @@ static const TouchControllerDescriptor *tc = nullptr;

static TouchState internalTouchState = {};

void I2C_FreeBus()
static void _cst340_exti_isr(void)
{
LL_GPIO_InitTypeDef gpioInit;
LL_GPIO_StructInit(&gpioInit);

// reset i2c bus by setting clk as output and sending manual clock pulses
gpioInit.Pin = TOUCH_SCL_GPIO_PIN;
gpioInit.Mode = LL_GPIO_MODE_OUTPUT;
gpioInit.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
gpioInit.Pull = LL_GPIO_PULL_NO;
gpioInit.Speed = LL_GPIO_SPEED_FREQ_LOW;
LL_GPIO_Init(TOUCH_GPIO, &gpioInit);

gpioInit.Pin = TOUCH_SDA_GPIO_PIN;
gpioInit.Mode = LL_GPIO_MODE_INPUT;
gpioInit.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
gpioInit.Pull = LL_GPIO_PULL_UP;
gpioInit.Speed = LL_GPIO_SPEED_FREQ_LOW;
LL_GPIO_Init(TOUCH_GPIO, &gpioInit);

//send 100khz clock train for some 100ms
tmr10ms_t until = get_tmr10ms() + 11;
while (get_tmr10ms() < until) {
if (LL_GPIO_IsInputPinSet(TOUCH_GPIO, TOUCH_SDA_GPIO_PIN)) {
TRACE("touch: i2c free again\n");
break;
}
TRACE("FREEEEE");
LL_GPIO_ResetOutputPin(TOUCH_GPIO, TOUCH_SCL_GPIO_PIN);
delay_us(10);
LL_GPIO_SetOutputPin(TOUCH_GPIO, TOUCH_SCL_GPIO_PIN);
delay_us(10);
}

//send stop condition:
gpioInit.Pin = TOUCH_SDA_GPIO_PIN;
gpioInit.Mode = LL_GPIO_MODE_OUTPUT;
gpioInit.Speed = LL_GPIO_SPEED_FREQ_LOW;
LL_GPIO_Init(TOUCH_GPIO, &gpioInit);

//clock is low
LL_GPIO_ResetOutputPin(TOUCH_GPIO, TOUCH_SCL_GPIO_PIN);
delay_us(10);
//sda = lo
LL_GPIO_SetOutputPin(TOUCH_GPIO, TOUCH_SDA_GPIO_PIN);
delay_us(10);
//clock goes high
LL_GPIO_ResetOutputPin(TOUCH_GPIO, TOUCH_SCL_GPIO_PIN);
delay_us(10);
//sda = hi
LL_GPIO_SetOutputPin(TOUCH_GPIO, TOUCH_SDA_GPIO_PIN);
delay_us(10);
TRACE("FREE BUS");
touchEventOccured = true;
}

// void Touch_DeInit()
// {
// I2C_DeInit(I2C_B1);
// __HAL_RCC_I2C1_FORCE_RESET();
// delay_ms(150);
// __HAL_RCC_I2C1_RELEASE_RESET();
// }

static int _enable_gpio_clock(GPIO_TypeDef *GPIOx)
static void TOUCH_AF_ExtiStop(void)
{
if (GPIOx == GPIOB)
__HAL_RCC_GPIOB_CLK_ENABLE();
else
return -1;

return 0;
stm32_exti_disable(TOUCH_INT_EXTI_Line);
}

void I2C_Init()
static void TOUCH_AF_ExtiConfig(void)
{
stm32_i2c_deinit(TOUCH_I2C_BUS);

__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_SYSCFG_CLK_ENABLE();
LL_SYSCFG_SetEXTISource(TOUCH_INT_EXTI_Port, TOUCH_INT_EXTI_SysCfgLine);

__HAL_RCC_I2C1_CLK_ENABLE();
__HAL_RCC_I2C1_CLK_DISABLE();

I2C_FreeBus();

stm32_i2c_init(TOUCH_I2C_BUS, TOUCH_I2C_CLK_RATE);
stm32_exti_enable(TOUCH_INT_EXTI_Line,
LL_EXTI_TRIGGER_FALLING,
_cst340_exti_isr);
}

static void TOUCH_AF_GPIOConfig(void)
{
LL_GPIO_InitTypeDef gpioInit;
LL_GPIO_StructInit(&gpioInit);

_enable_gpio_clock(TOUCH_RST_GPIO);
_enable_gpio_clock(TOUCH_INT_GPIO);

gpioInit.Pin = TOUCH_RST_GPIO_PIN;
stm32_gpio_enable_clock(TOUCH_RST_GPIO);
stm32_gpio_enable_clock(TOUCH_INT_GPIO);

gpioInit.Mode = LL_GPIO_MODE_OUTPUT;
gpioInit.Speed = LL_GPIO_SPEED_FREQ_LOW;
gpioInit.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
gpioInit.Pull = LL_GPIO_PULL_UP;
gpioInit.Pull = LL_GPIO_PULL_NO;

gpioInit.Pin = TOUCH_RST_GPIO_PIN;
LL_GPIO_Init(TOUCH_RST_GPIO, &gpioInit);
LL_GPIO_SetOutputPin(TOUCH_RST_GPIO, TOUCH_RST_GPIO_PIN);

//ext interupt
gpioInit.Pin = TOUCH_INT_GPIO_PIN;
gpioInit.Mode = LL_GPIO_MODE_INPUT;
gpioInit.Pull = LL_GPIO_PULL_UP;
gpioInit.Speed = LL_GPIO_SPEED_FREQ_HIGH;
gpioInit.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
LL_GPIO_Init(TOUCH_INT_GPIO, &gpioInit);
LL_GPIO_SetOutputPin(TOUCH_INT_GPIO, TOUCH_INT_GPIO_PIN);
}

LL_SYSCFG_SetEXTISource(TOUCH_INT_EXTI_Port, TOUCH_INT_EXTI_SysCfgLine);

LL_EXTI_InitTypeDef extiInit;
LL_EXTI_StructInit(&extiInit);

extiInit.Line_0_31 = TOUCH_INT_EXTI_Line;
extiInit.Mode = LL_EXTI_MODE_IT;
extiInit.Trigger = LL_EXTI_TRIGGER_FALLING;
extiInit.LineCommand = ENABLE;
LL_EXTI_Init(&extiInit);
void I2C_Init_Radio(void)
{
TRACE("CST340 I2C Init");

NVIC_SetPriority(TOUCH_INT_EXTI_IRQn, 8);
NVIC_EnableIRQ(TOUCH_INT_EXTI_IRQn);
if (stm32_i2c_init(TOUCH_I2C_BUS, TOUCH_I2C_CLK_RATE) < 0) {
TRACE("CST340 ERROR: stm32_i2c_init failed");
return;
}
}

// void Touch_DeInit()
// {
// I2C_DeInit(I2C_B1);
// __HAL_RCC_I2C1_FORCE_RESET();
// delay_ms(150);
// __HAL_RCC_I2C1_RELEASE_RESET();
// }

#define I2C_TIMEOUT_MAX 5 // 5 ms

bool touch_i2c_read(uint8_t addr, uint8_t reg, uint8_t * data, uint8_t len)
Expand Down Expand Up @@ -226,21 +161,23 @@ static void TS_IO_Write(uint8_t addr, uint8_t reg, uint8_t data)

static uint8_t TS_IO_Read(uint8_t addr, uint8_t reg)
{
uint8_t retult;
uint8_t result;
uint8_t tryCount = 3;
while (!touch_i2c_read(addr, reg, &retult, 1)) {
while (!touch_i2c_read(addr, reg, &result, 1)) {
if (--tryCount == 0) break;
I2C_Init();
I2C_Init_Radio();
// I2C_Init();
}
return retult;
return result;
}

static uint16_t TS_IO_ReadMultiple(uint8_t addr, uint8_t reg, uint8_t * buffer, uint16_t length)
{
uint8_t tryCount = 3;
while (!touch_i2c_read(addr, reg, buffer, length)) {
if (--tryCount == 0) break;
I2C_Init();
I2C_Init_Radio();
// I2C_Init();
}
return 1;
}
Expand Down Expand Up @@ -439,6 +376,9 @@ static uint8_t cst340_TS_DetectTouch()
{
uint8_t nbTouch;
uint8_t reg = TS_IO_Read(TOUCH_CST340_I2C_ADDRESS, CST340_FINGER1_REG);
#if defined(DEBUG)
TRACE("cst340_TS_DetectTouch: reg=%d", reg);
#endif
if( reg == 0x06 )
nbTouch = 1;
else
Expand Down Expand Up @@ -487,9 +427,12 @@ void detectTouchController()

void TouchInit()
{
I2C_Init();
TOUCH_AF_GPIOConfig(); // SET RST=OUT INT=IN INT=HIGH
I2C_Init_Radio();
TouchReset();
detectTouchController();
TOUCH_AF_ExtiConfig();

tc->printDebugInfo();
}

Expand All @@ -500,6 +443,9 @@ void handleTouch()
uint32_t tEvent = 0;
tc->read(&touchX, &touchY, &tEvent);

#if defined(DEBUG)
TRACE("handleTouch: touchX=%d, touchY=%d, tEvent=%d", touchX, touchY, tEvent);
#endif
// touch sensor is rotated by 90 deg
unsigned short tmp = touchY;
touchY = 319 - touchX;
Expand Down Expand Up @@ -538,18 +484,6 @@ void handleTouch()
}
}

#if !defined(TOUCH_INT_EXTI_IRQHandler)
#error "TOUCH_INT_EXTI_IRQHandler is not defined"
#endif
extern "C" void TOUCH_INT_EXTI_IRQHandler(void)
{
if (LL_EXTI_IsEnabledIT_0_31(TOUCH_INT_EXTI_Line) &&
LL_EXTI_IsActiveFlag_0_31(TOUCH_INT_EXTI_Line)) {
touchEventOccured = true;
LL_EXTI_ClearFlag_0_31(TOUCH_INT_EXTI_Line);
}
}

bool touchPanelEventOccured()
{
return touchEventOccured;
Expand Down Expand Up @@ -595,6 +529,11 @@ TouchState touchPanelRead()
internalTouchState.deltaY = 0;
if(internalTouchState.event == TE_UP || internalTouchState.event == TE_SLIDE_END)
internalTouchState.event = TE_NONE;

#if defined(DEBUG)
TRACE("%s: Event = %d", touchController == TC_CST340 ? "CST340" : "FT6236", ret.event);
#endif

return ret;
}

Expand Down

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