/******************************************************************************
* FunctionName : key_init
* Description : init keys
* Parameters : key_param *keys - keys parameter, which inited by key_init_single
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
key_init(struct keys_param *keys)
{
uint8 i;
os_printf("-%s-%s \r\n", __FILE__, __func__);
ETS_GPIO_INTR_ATTACH(key_intr_handler, keys);
ETS_GPIO_INTR_DISABLE();
for (i = 0; i < keys->key_num; i++) {
keys->single_key[i]->key_level = 1;
PIN_FUNC_SELECT(keys->single_key[i]->gpio_name, keys->single_key[i]->gpio_func);
gpio_output_set(0, 0, 0, GPIO_ID_PIN(keys->single_key[i]->gpio_id));
gpio_register_set(GPIO_PIN_ADDR(keys->single_key[i]->gpio_id), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
//clear gpio14 status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(keys->single_key[i]->gpio_id));
//enable interrupt
gpio_pin_intr_state_set(GPIO_ID_PIN(keys->single_key[i]->gpio_id), GPIO_PIN_INTR_ANYEGDE);
}
ETS_GPIO_INTR_ENABLE();
}
/**
* Sets the 'gpio_pin' pin as a GPIO and sets the interrupt to trigger on that pin.
* The 'interruptArg' is the function argument that will be sent to your interruptHandler
*/
bool ICACHE_FLASH_ATTR
easygpio_attachInterrupt(uint8_t gpio_pin, EasyGPIO_PullStatus pullStatus, void (*interruptHandler)(void *arg), void *interruptArg) {
uint32_t gpio_name;
uint8_t gpio_func;
if (gpio_pin == 16) {
os_printf("easygpio_setupInterrupt Error: GPIO16 does not have interrupts\n");
return false;
}
if (!easygpio_getGPIONameFunc(gpio_pin, &gpio_name, &gpio_func) ) {
return false;
}
ETS_GPIO_INTR_ATTACH(interruptHandler, interruptArg);
ETS_GPIO_INTR_DISABLE();
PIN_FUNC_SELECT(gpio_name, gpio_func);
easygpio_setupPullsByName(gpio_name, pullStatus);
// disable output
GPIO_DIS_OUTPUT(gpio_pin);
gpio_register_set(GPIO_PIN_ADDR(gpio_pin), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
//clear gpio14 status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(gpio_pin));
ETS_GPIO_INTR_ENABLE();
return true;
}
/******************************************************************************
* FunctionName : key_init
* Description : init keys
* Parameters : key_param *keys - keys parameter, which inited by key_init_single
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR key_init() {
uint8 i;
ETS_GPIO_INTR_ATTACH(key_intr_handler, &key_parameters);
ETS_GPIO_INTR_DISABLE();
for (i = 0; i < key_parameters.key_num; i++) {
key_parameters.single_key[i]->key_level = 1;
key_parameters.single_key[i]->is_long = 0;
PIN_FUNC_SELECT(key_parameters.single_key[i]->gpio_name, key_parameters.single_key[i]->gpio_func);
// Set GPIO as input
gpio_output_set(0, 0, 0, GPIO_ID_PIN(key_parameters.single_key[i]->gpio_id));
gpio_register_set(
GPIO_PIN_ADDR(key_parameters.single_key[i]->gpio_id),
GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE) |
GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE) |
GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE)
);
//clear gpio14 status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(key_parameters.single_key[i]->gpio_id));
//enable interrupt
gpio_pin_intr_state_set(GPIO_ID_PIN(key_parameters.single_key[i]->gpio_id), GPIO_PIN_INTR_NEGEDGE);
}
ETS_GPIO_INTR_ENABLE();
}
void ICACHE_FLASH_ATTR
buttons_init()
{
//Attach the interrupt thing
ETS_GPIO_INTR_ATTACH(rotary_intr_handler,12);
//Disable interrupts
ETS_GPIO_INTR_DISABLE();
//Set GPIO to IO
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDI_U, FUNC_GPIO12);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTCK_U, FUNC_GPIO13);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO0_U, FUNC_GPIO0);
//Set the GPIO to input
gpio_output_set(0, 0, 0, GPIO_ID_PIN(12));
gpio_output_set(0, 0, 0, GPIO_ID_PIN(13));
gpio_output_set(0, 0, 0, GPIO_ID_PIN(0));
//Not sure what this does
gpio_register_set(GPIO_PIN_ADDR(12), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
gpio_register_set(GPIO_PIN_ADDR(13), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
gpio_register_set(GPIO_PIN_ADDR(0), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
//clear gpio status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(12));
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(13));
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(0));
//re-enable gpio0 interrupt
gpio_pin_intr_state_set(GPIO_ID_PIN(12), GPIO_PIN_INTR_ANYEDGE);
//Global re-enable interrupts
ETS_GPIO_INTR_ENABLE();
os_timer_disarm(&button_timer);
os_timer_setfn(&button_timer, (os_timer_func_t *)button_push, 1);
os_timer_arm(&button_timer, 50, 1);
}
static void NO_INTR_CODE set_gpio_interrupt(uint8 pin) {
ETS_GPIO_INTR_DISABLE();
PIN_FUNC_SELECT(pin_mux[pin], pin_func[pin]);
GPIO_DIS_OUTPUT(pin_num[pin]);
gpio_register_set(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])),
GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
ETS_GPIO_INTR_ENABLE();
}
void
supla_esp_gpio_enable_input_port(char port) {
gpio_output_set(0, 0, 0, GPIO_ID_PIN(port));
gpio_register_set(GPIO_PIN_ADDR(port), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(port));
gpio_pin_intr_state_set(GPIO_ID_PIN(port), GPIO_PIN_INTR_ANYEDGE);
}
uint8_t platform_sigma_delta_close( uint8_t pin )
{
if (pin < 1 || pin > NUM_GPIO)
return 0;
sigma_delta_stop();
// set GPIO input mode for this pin
platform_gpio_mode( pin, PLATFORM_GPIO_INPUT, PLATFORM_GPIO_PULLUP );
// CONNECT GPIO TO PIN PAD
GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])),
(GPIO_REG_READ(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin]))) &(~GPIO_PIN_SOURCE_MASK)) |
GPIO_PIN_SOURCE_SET( GPIO_AS_PIN_SOURCE ));
return 1;
}
uint8_t platform_sigma_delta_setup( uint8_t pin )
{
if (pin < 1 || pin > NUM_GPIO)
return 0;
sigma_delta_setup();
// set GPIO output mode for this pin
platform_gpio_mode( pin, PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
platform_gpio_write( pin, PLATFORM_GPIO_LOW );
// enable sigma-delta on this pin
GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])),
(GPIO_REG_READ(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin]))) &(~GPIO_PIN_SOURCE_MASK)) |
GPIO_PIN_SOURCE_SET( SIGMA_AS_PIN_SOURCE ));
return 1;
}
/******************************************************************************
* FunctionName : user_plug_set_status
* Description : set plug's status, 0x00 or 0x01
* Parameters : uint8 - status
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR
user_plug_set_status(bool status)
{
// if (status != plug_param.status) {
// if (status > 1) {
// os_printf("error status input!\n");
// return;
// }
//
// plug_param.status = status;
// PLUG_STATUS_OUTPUT(PLUG_RELAY_LED_IO_NUM, status);
// }
if (status != plug_param.status) {
if (status > 1) {
os_printf("error status input!\n");
return;
}
plug_param.status = status;
//PLUG_STATUS_OUTPUT(PLUG_RELAY_LED_IO_NUM, status);
ETS_GPIO_INTR_DISABLE();
PIN_FUNC_SELECT(pin_mux[pin], pin_func[pin]);
GPIO_DIS_OUTPUT(pin_num[pin]);
gpio_register_set(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
ETS_GPIO_INTR_ENABLE();
//disable global interrupt
ETS_GPIO_INTR_DISABLE();
//clear interrupt status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(pin_num[pin]));
pin_int_type[pin] = type;
//enable interrupt
gpio_pin_intr_state_set(GPIO_ID_PIN(pin_num[pin]), type);
//enable global interrupt
ETS_GPIO_INTR_ENABLE();
ETS_GPIO_INTR_ATTACH(func, arg)
}
}
void ICACHE_FLASH_ATTR
vibrate_init(uint8 gpio_id)
{
uint32 v_gpio_name=tisan_get_gpio_name(gpio_id);
uint8 v_gpio_func=tisan_get_gpio_general_func(gpio_id);
PIN_FUNC_SELECT(v_gpio_name, v_gpio_func);
PIN_PULLUP_EN(v_gpio_name);
gpio_output_set(0, 0, 0, GPIO_ID_PIN(gpio_id)); //set as input mode
gpio_register_set(GPIO_PIN_ADDR(gpio_id), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
//clear interrupt status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(gpio_id));
//enable interrupt
gpio_pin_intr_state_set(GPIO_ID_PIN(gpio_id), GPIO_PIN_INTR_NEGEDGE);
peri_alarm_init(ALARM_GPIO_ID);
peri_vibrate_tim_start(100);
}
/**
* Sets the 'gpio_pin' pin as a GPIO and sets the interrupt to trigger on that pin
*/
bool ICACHE_FLASH_ATTR
easygpio_setupInterrupt(uint8_t gpio_pin, bool pullUp, bool pullDown, void (*interruptHandler)(void)) {
uint32_t gpio_name;
uint8_t gpio_func;
if (gpio_pin == 6 || gpio_pin == 7 || gpio_pin == 8 || gpio_pin == 11 || gpio_pin >= 17) {
os_printf("easygpio_setupInterrupt Error: There is no GPIO%d, check your code\n", gpio_pin);
return false;
}
if (gpio_pin == 16) {
os_printf("easygpio_setupInterrupt Error: GPIO16 does not have interrupts\n");
return false;
}
if (!easygpio_getGpioNameFunc(gpio_pin, &gpio_name, &gpio_func) ) {
return false;
}
ETS_GPIO_INTR_ATTACH(interruptHandler, NULL);
ETS_GPIO_INTR_DISABLE();
PIN_FUNC_SELECT(gpio_name, gpio_func);
easygpio_setupPulls(gpio_name, pullUp, pullDown);
// disable output
GPIO_DIS_OUTPUT(gpio_pin);
gpio_register_set(GPIO_PIN_ADDR(gpio_pin), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
//clear gpio14 status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(gpio_pin));
ETS_GPIO_INTR_ENABLE();
return true;
}
void Softuart_Init(Softuart *s, uint16_t baudrate)
{
//disable rs485
s->is_rs485 = 0;
if(! _Softuart_Instances_Count) {
os_printf("SOFTUART initialize gpio\r\n");
//Initilaize gpio subsystem
gpio_init();
}
//set bit time
s->bit_time = (1000000 / baudrate);
os_printf("SOFTUART bit_time is %d\r\n",s->bit_time);
//init tx pin
if(!s->pin_tx.gpio_mux_name) {
os_printf("SOFTUART ERROR: Set tx pin (%d)\r\n",s->pin_tx.gpio_mux_name);
} else {
//enable pin as gpio
PIN_FUNC_SELECT(s->pin_tx.gpio_mux_name, s->pin_tx.gpio_func);
//set pullup (UART idle is VDD)
PIN_PULLUP_EN(s->pin_tx.gpio_mux_name);
//set high for tx idle
GPIO_OUTPUT_SET(GPIO_ID_PIN(s->pin_tx.gpio_id), 1);
os_delay_us(100000);
os_printf("SOFTUART TX INIT DONE\r\n");
}
//init rx pin
if(!s->pin_rx.gpio_mux_name) {
os_printf("SOFTUART ERROR: Set rx pin (%d)\r\n",s->pin_rx.gpio_mux_name);
} else {
//enable pin as gpio
PIN_FUNC_SELECT(s->pin_rx.gpio_mux_name, s->pin_rx.gpio_func);
//set pullup (UART idle is VDD)
PIN_PULLUP_EN(s->pin_rx.gpio_mux_name);
//set to input -> disable output
GPIO_DIS_OUTPUT(GPIO_ID_PIN(s->pin_rx.gpio_id));
//set interrupt related things
//disable interrupts by GPIO
ETS_GPIO_INTR_DISABLE();
//attach interrupt handler and a pointer that will be passed around each time
ETS_GPIO_INTR_ATTACH(Softuart_Intr_Handler, s);
//not sure what this does... (quote from example):
// void gpio_register_set(uint32 reg_id, uint32 value);
//
// From include file
// Set the specified GPIO register to the specified value.
// This is a very general and powerful interface that is not
// expected to be used during normal operation. It is intended
// mainly for debug, or for unusual requirements.
//
// All people repeat this mantra but I don't know what it means
//
gpio_register_set(GPIO_PIN_ADDR(s->pin_rx.gpio_id),
GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE) |
GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE) |
GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
//clear interrupt handler status, basically writing a low to the output
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(s->pin_rx.gpio_id));
//enable interrupt for pin on any edge (rise and fall)
//@TODO: should work with ANYEDGE (=3), but complie error
gpio_pin_intr_state_set(GPIO_ID_PIN(s->pin_rx.gpio_id), 3);
//globally enable GPIO interrupts
ETS_GPIO_INTR_ENABLE();
os_printf("SOFTUART RX INIT DONE\r\n");
}
//add instance to array of instances
_Softuart_GPIO_Instances[s->pin_rx.gpio_id] = s;
_Softuart_Instances_Count++;
os_printf("SOFTUART INIT DONE\r\n");
}
int ICACHE_FLASH_ATTR set_gpio_mode(unsigned pin, unsigned mode, unsigned pull)
{
if (pin >= GPIO_PIN_NUM)
return -1;
if(pin == 0) {
if(mode == GPIO_INPUT)
gpio16_input_conf();
else
gpio16_output_conf();
return 1;
}
switch(pull) {
case GPIO_PULLUP:
// PIN_PULLDWN_DIS(pin_mux[pin]);
PIN_PULLUP_EN(pin_mux[pin]);
break;
case GPIO_PULLDOWN:
PIN_PULLUP_DIS(pin_mux[pin]);
// PIN_PULLDWN_EN(pin_mux[pin]);
break;
case GPIO_FLOAT:
PIN_PULLUP_DIS(pin_mux[pin]);
// PIN_PULLDWN_DIS(pin_mux[pin]);
break;
default:
PIN_PULLUP_DIS(pin_mux[pin]);
// PIN_PULLDWN_DIS(pin_mux[pin]);
break;
}
switch(mode) {
case GPIO_INPUT:
GPIO_DIS_OUTPUT(pin_num[pin]);
break;
case GPIO_OUTPUT:
ETS_GPIO_INTR_DISABLE();
#ifdef GPIO_INTERRUPT_ENABLE
pin_int_type[pin] = GPIO_PIN_INTR_DISABLE;
#endif
PIN_FUNC_SELECT(pin_mux[pin], pin_func[pin]);
//disable interrupt
gpio_pin_intr_state_set(GPIO_ID_PIN(pin_num[pin]), GPIO_PIN_INTR_DISABLE);
//clear interrupt status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(pin_num[pin]));
GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])), GPIO_REG_READ(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin]))) & (~ GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_ENABLE))); //disable open drain;
ETS_GPIO_INTR_ENABLE();
break;
#ifdef GPIO_INTERRUPT_ENABLE
case GPIO_INT:
ETS_GPIO_INTR_DISABLE();
PIN_FUNC_SELECT(pin_mux[pin], pin_func[pin]);
GPIO_DIS_OUTPUT(pin_num[pin]);
gpio_register_set(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
ETS_GPIO_INTR_ENABLE();
break;
#endif
default:
break;
}
return 1;
}
int platform_gpio_mode( unsigned pin, unsigned mode, unsigned pull )
{
// NODE_DBG("Function platform_gpio_mode() is called. pin_mux:%d, func:%d\n",pin_mux[pin],pin_func[pin]);
if (pin >= NUM_GPIO)
return -1;
if(pin == 0){
if(mode==PLATFORM_GPIO_INPUT)
gpio16_input_conf();
else
gpio16_output_conf();
return 1;
}
platform_pwm_close(pin); // closed from pwm module, if it is used in pwm
switch(pull){
case PLATFORM_GPIO_PULLUP:
PIN_PULLDWN_DIS(pin_mux[pin]);
PIN_PULLUP_EN(pin_mux[pin]);
break;
case PLATFORM_GPIO_PULLDOWN:
PIN_PULLUP_DIS(pin_mux[pin]);
PIN_PULLDWN_EN(pin_mux[pin]);
break;
case PLATFORM_GPIO_FLOAT:
PIN_PULLUP_DIS(pin_mux[pin]);
PIN_PULLDWN_DIS(pin_mux[pin]);
break;
default:
PIN_PULLUP_DIS(pin_mux[pin]);
PIN_PULLDWN_DIS(pin_mux[pin]);
break;
}
switch(mode){
case PLATFORM_GPIO_INPUT:
#if defined( LUA_USE_MODULES_GPIO ) && defined( GPIO_INTERRUPT_ENABLE )
lua_gpio_unref(pin); // unref the lua ref call back.
#endif
GPIO_DIS_OUTPUT(pin_num[pin]);
case PLATFORM_GPIO_OUTPUT:
ETS_GPIO_INTR_DISABLE();
#ifdef GPIO_INTERRUPT_ENABLE
pin_int_type[pin] = GPIO_PIN_INTR_DISABLE;
#endif
PIN_FUNC_SELECT(pin_mux[pin], pin_func[pin]);
//disable interrupt
gpio_pin_intr_state_set(GPIO_ID_PIN(pin_num[pin]), GPIO_PIN_INTR_DISABLE);
//clear interrupt status
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(pin_num[pin]));
GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])), GPIO_REG_READ(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin]))) & (~ GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_ENABLE))); //disable open drain;
ETS_GPIO_INTR_ENABLE();
break;
#ifdef GPIO_INTERRUPT_ENABLE
case PLATFORM_GPIO_INT:
ETS_GPIO_INTR_DISABLE();
PIN_FUNC_SELECT(pin_mux[pin], pin_func[pin]);
GPIO_DIS_OUTPUT(pin_num[pin]);
gpio_register_set(GPIO_PIN_ADDR(GPIO_ID_PIN(pin_num[pin])), GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE)
| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE)
| GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
ETS_GPIO_INTR_ENABLE();
break;
#endif
default:
break;
}
return 1;
}
//-----------------------------------------------------------------------------------------
void static dht11_protocol(uint32 gpio_status,int cause)
{
static int actual_bit;
switch(cause) // 0 = gpio interrupt, 1=timer
{
case 0: // gpio edge
{
// disable interrupt for GPIO
gpio_pin_intr_state_set(GPIO_ID_PIN(dht11_gpio), GPIO_PIN_INTR_DISABLE);
// clear interrupt status for GPIO
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, gpio_status & GPIO_Pin(dht11_gpio));
// Reactivate interrupts for GPIO0
gpio_pin_intr_state_set(GPIO_ID_PIN(dht11_gpio), GPIO_PIN_INTR_ANYEGDE);
switch(sStatus)
{
case dht11_connecting:
if(GPIO_INPUT_GET(dht11_gpio))
{
// Rising edge ?? Error.
dht11_set_read_nok();
dht11_set_standby();
}
else
{
sStatus = dht11_mark_connecting;
}
break;
case dht11_mark_connecting:
if(!GPIO_INPUT_GET(dht11_gpio))
{
// Falling edge ?? Error.
dht11_set_read_nok();
dht11_set_standby();
}
else
{
sStatus = dht11_waiting_bit;
}
break;
case dht11_waiting_bit:
if(GPIO_INPUT_GET(dht11_gpio))
{
// Rising edge ?? Error.
dht11_set_read_nok();
dht11_set_standby();
}
else
{
sStatus = dht11_mark_bit;
actual_bit=0;
}
break;
case dht11_mark_bit:
if(! GPIO_INPUT_GET(dht11_gpio))
{
// Falling edge ?? Error.
dht11_set_read_nok();
dht11_set_standby();
}
else
{
if(actual_bit >= 40)
{
dht11_set_standby(); // finish OK
}
else
{
last_timer = system_get_time();
sStatus = dht11_read_bit;
}
}
break;
case dht11_read_bit:
if(GPIO_INPUT_GET(dht11_gpio))
{
// Rising edge ?? Error.
dht11_set_read_nok();
dht11_set_standby();
}
else
{
// 26-28 uS means 0. 70 uS means 1
int bit_data = ((system_get_time()-last_timer) > 40) ? 1:0;
int actual_byte = actual_bit / 8;
sRead[actual_byte] <<= 1;
sRead[actual_byte] |= bit_data;
actual_bit++;
sStatus = dht11_mark_bit;
}
break;
case dht11_standby:
case dht11_mark:
default:
dht11_set_standby();
break;
}
}
break;
case 1: //timer
switch(sStatus)
{
case dht11_mark: // end of mark
sStatus = dht11_connecting;
// GPIO as Output to high level by default.
GPIO_OUTPUT_SET(dht11_gpio,1);
GPIO_AS_INPUT(dht11_gpio);
ETS_GPIO_INTR_DISABLE();
gpio_register_set(GPIO_PIN_ADDR(dht11_gpio),
GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE) |
GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE) |
GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(dht11_gpio));
gpio_pin_intr_state_set(GPIO_ID_PIN(dht11_gpio), GPIO_PIN_INTR_ANYEGDE);
ETS_GPIO_INTR_ENABLE();
os_timer_disarm(&dht11_timer);
os_timer_arm(&dht11_timer,6,0); // maximun frame time 4.8 ms
break;
case dht11_connecting:
case dht11_mark_connecting:
case dht11_waiting_bit:
case dht11_mark_bit:
case dht11_read_bit:
default:
dht11_set_read_nok();
dht11_set_standby();
break;
}
default:
break;
}
}
