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- // Platform-dependent functions
- #include "platform.h"
- #include "c_stdio.h"
- #include "c_string.h"
- #include "c_stdlib.h"
- #include "gpio.h"
- #include "user_interface.h"
- #include "driver/uart.h"
- // Platform specific includes
- static void pwms_init();
- int platform_init()
- {
- // Setup PWMs
- pwms_init();
- cmn_platform_init();
- // All done
- return PLATFORM_OK;
- }
- // ****************************************************************************
- // KEY_LED functions
- uint8_t platform_key_led( uint8_t level){
- uint8_t temp;
- gpio16_output_set(1); // set to high first, for reading key low level
- gpio16_input_conf();
- temp = gpio16_input_get();
- gpio16_output_conf();
- gpio16_output_set(level);
- return temp;
- }
- // ****************************************************************************
- // GPIO functions
- #ifdef GPIO_INTERRUPT_ENABLE
- extern void lua_gpio_unref(unsigned pin);
- #endif
- 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:
- #ifdef 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;
- }
- int platform_gpio_write( unsigned pin, unsigned level )
- {
- // NODE_DBG("Function platform_gpio_write() is called. pin:%d, level:%d\n",GPIO_ID_PIN(pin_num[pin]),level);
- if (pin >= NUM_GPIO)
- return -1;
- if(pin == 0){
- gpio16_output_conf();
- gpio16_output_set(level);
- return 1;
- }
- GPIO_OUTPUT_SET(GPIO_ID_PIN(pin_num[pin]), level);
- }
- int platform_gpio_read( unsigned pin )
- {
- // NODE_DBG("Function platform_gpio_read() is called. pin:%d\n",GPIO_ID_PIN(pin_num[pin]));
- if (pin >= NUM_GPIO)
- return -1;
- if(pin == 0){
- // gpio16_input_conf();
- return 0x1 & gpio16_input_get();
- }
- // GPIO_DIS_OUTPUT(pin_num[pin]);
- return 0x1 & GPIO_INPUT_GET(GPIO_ID_PIN(pin_num[pin]));
- }
- #ifdef GPIO_INTERRUPT_ENABLE
- static void platform_gpio_intr_dispatcher( platform_gpio_intr_handler_fn_t cb){
- uint8 i, level;
- uint32 gpio_status = GPIO_REG_READ(GPIO_STATUS_ADDRESS);
- for (i = 0; i < GPIO_PIN_NUM; i++) {
- if (pin_int_type[i] && (gpio_status & BIT(pin_num[i])) ) {
- //disable interrupt
- gpio_pin_intr_state_set(GPIO_ID_PIN(pin_num[i]), GPIO_PIN_INTR_DISABLE);
- //clear interrupt status
- GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, gpio_status & BIT(pin_num[i]));
- level = 0x1 & GPIO_INPUT_GET(GPIO_ID_PIN(pin_num[i]));
- if(cb){
- cb(i, level);
- }
- gpio_pin_intr_state_set(GPIO_ID_PIN(pin_num[i]), pin_int_type[i]);
- }
- }
- }
- void platform_gpio_init( platform_gpio_intr_handler_fn_t cb )
- {
- ETS_GPIO_INTR_ATTACH(platform_gpio_intr_dispatcher, cb);
- }
- int platform_gpio_intr_init( unsigned pin, GPIO_INT_TYPE type )
- {
- if (pin >= NUM_GPIO)
- return -1;
- 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);
- ETS_GPIO_INTR_ENABLE();
- }
- #endif
- // ****************************************************************************
- // UART
- // TODO: Support timeouts.
- // UartDev is defined and initialized in rom code.
- extern UartDevice UartDev;
- uint32_t platform_uart_setup( unsigned id, uint32_t baud, int databits, int parity, int stopbits )
- {
- switch( baud )
- {
- case BIT_RATE_9600:
- case BIT_RATE_19200:
- case BIT_RATE_38400:
- case BIT_RATE_57600:
- case BIT_RATE_74880:
- case BIT_RATE_115200:
- case BIT_RATE_230400:
- case BIT_RATE_460800:
- case BIT_RATE_921600:
- UartDev.baut_rate = baud;
- break;
- default:
- UartDev.baut_rate = BIT_RATE_9600;
- break;
- }
- switch( databits )
- {
- case 5:
- UartDev.data_bits = FIVE_BITS;
- break;
- case 6:
- UartDev.data_bits = SIX_BITS;
- break;
- case 7:
- UartDev.data_bits = SEVEN_BITS;
- break;
- case 8:
- UartDev.data_bits = EIGHT_BITS;
- break;
- default:
- UartDev.data_bits = EIGHT_BITS;
- break;
- }
- switch (stopbits)
- {
- case PLATFORM_UART_STOPBITS_1:
- UartDev.stop_bits = ONE_STOP_BIT;
- break;
- case PLATFORM_UART_STOPBITS_2:
- UartDev.stop_bits = TWO_STOP_BIT;
- break;
- default:
- UartDev.stop_bits = ONE_STOP_BIT;
- break;
- }
- switch (parity)
- {
- case PLATFORM_UART_PARITY_EVEN:
- UartDev.parity = EVEN_BITS;
- break;
- case PLATFORM_UART_PARITY_ODD:
- UartDev.parity = ODD_BITS;
- break;
- default:
- UartDev.parity = NONE_BITS;
- break;
- }
- uart_setup(id);
- return baud;
- }
- // Send: version with and without mux
- void platform_uart_send( unsigned id, u8 data )
- {
- uart_tx_one_char(id, data);
- }
- // ****************************************************************************
- // PWMs
- static uint16_t pwms_duty[NUM_PWM] = {0};
- static void pwms_init()
- {
- int i;
- for(i=0;i<NUM_PWM;i++){
- pwms_duty[i] = DUTY(0);
- }
- pwm_init(500, NULL);
- // NODE_DBG("Function pwms_init() is called.\n");
- }
- // Return the PWM clock
- // NOTE: Can't find a function to query for the period set for the timer,
- // therefore using the struct.
- // This may require adjustment if driver libraries are updated.
- uint32_t platform_pwm_get_clock( unsigned pin )
- {
- // NODE_DBG("Function platform_pwm_get_clock() is called.\n");
- if( pin >= NUM_PWM)
- return 0;
- if(!pwm_exist(pin))
- return 0;
- return (uint32_t)pwm_get_freq(pin);
- }
- // Set the PWM clock
- uint32_t platform_pwm_set_clock( unsigned pin, uint32_t clock )
- {
- // NODE_DBG("Function platform_pwm_set_clock() is called.\n");
- if( pin >= NUM_PWM)
- return 0;
- if(!pwm_exist(pin))
- return 0;
- pwm_set_freq((uint16_t)clock, pin);
- pwm_start();
- return (uint32_t)pwm_get_freq( pin );
- }
- uint32_t platform_pwm_get_duty( unsigned pin )
- {
- // NODE_DBG("Function platform_pwm_get_duty() is called.\n");
- if( pin < NUM_PWM){
- if(!pwm_exist(pin))
- return 0;
- // return NORMAL_DUTY(pwm_get_duty(pin));
- return pwms_duty[pin];
- }
- return 0;
- }
- // Set the PWM duty
- uint32_t platform_pwm_set_duty( unsigned pin, uint32_t duty )
- {
- // NODE_DBG("Function platform_pwm_set_duty() is called.\n");
- if ( pin < NUM_PWM)
- {
- if(!pwm_exist(pin))
- return 0;
- pwm_set_duty(DUTY(duty), pin);
- } else {
- return 0;
- }
- pwm_start();
- pwms_duty[pin] = NORMAL_DUTY(pwm_get_duty(pin));
- return pwms_duty[pin];
- }
- uint32_t platform_pwm_setup( unsigned pin, uint32_t frequency, unsigned duty )
- {
- uint32_t clock;
- if ( pin < NUM_PWM)
- {
- platform_gpio_mode(pin, PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT); // disable gpio interrupt first
- if(!pwm_add(pin))
- return 0;
- // pwm_set_duty(DUTY(duty), pin);
- pwm_set_duty(0, pin);
- pwms_duty[pin] = duty;
- pwm_set_freq((uint16_t)frequency, pin);
- } else {
- return 0;
- }
- clock = platform_pwm_get_clock( pin );
- pwm_start();
- return clock;
- }
- void platform_pwm_close( unsigned pin )
- {
- // NODE_DBG("Function platform_pwm_stop() is called.\n");
- if ( pin < NUM_PWM)
- {
- pwm_delete(pin);
- pwm_start();
- }
- }
- void platform_pwm_start( unsigned pin )
- {
- // NODE_DBG("Function platform_pwm_start() is called.\n");
- if ( pin < NUM_PWM)
- {
- if(!pwm_exist(pin))
- return;
- pwm_set_duty(DUTY(pwms_duty[pin]), pin);
- pwm_start();
- }
- }
- void platform_pwm_stop( unsigned pin )
- {
- // NODE_DBG("Function platform_pwm_stop() is called.\n");
- if ( pin < NUM_PWM)
- {
- if(!pwm_exist(pin))
- return;
- pwm_set_duty(0, pin);
- pwm_start();
- }
- }
- // *****************************************************************************
- // I2C platform interface
- uint32_t platform_i2c_setup( unsigned id, uint8_t sda, uint8_t scl, uint32_t speed ){
- if (sda >= NUM_GPIO || scl >= NUM_GPIO)
- return 0;
- // platform_pwm_close(sda);
- // platform_pwm_close(scl);
-
- // disable gpio interrupt first
- platform_gpio_mode(sda, PLATFORM_GPIO_INPUT, PLATFORM_GPIO_PULLUP); // inside this func call platform_pwm_close
- platform_gpio_mode(scl, PLATFORM_GPIO_INPUT, PLATFORM_GPIO_PULLUP); // disable gpio interrupt first
- i2c_master_gpio_init(sda, scl);
- return PLATFORM_I2C_SPEED_SLOW;
- }
- void platform_i2c_send_start( unsigned id ){
- i2c_master_start();
- }
- void platform_i2c_send_stop( unsigned id ){
- i2c_master_stop();
- }
- int platform_i2c_send_address( unsigned id, uint16_t address, int direction ){
- // Convert enum codes to R/w bit value.
- // If TX == 0 and RX == 1, this test will be removed by the compiler
- if ( ! ( PLATFORM_I2C_DIRECTION_TRANSMITTER == 0 &&
- PLATFORM_I2C_DIRECTION_RECEIVER == 1 ) ) {
- direction = ( direction == PLATFORM_I2C_DIRECTION_TRANSMITTER ) ? 0 : 1;
- }
- i2c_master_writeByte( (uint8_t) ((address << 1) | direction ));
- // Low-level returns nack (0=acked); we return ack (1=acked).
- return ! i2c_master_getAck();
- }
- int platform_i2c_send_byte( unsigned id, uint8_t data ){
- i2c_master_writeByte(data);
- // Low-level returns nack (0=acked); we return ack (1=acked).
- return ! i2c_master_getAck();
- }
- int platform_i2c_recv_byte( unsigned id, int ack ){
- uint8_t r = i2c_master_readByte();
- i2c_master_setAck( !ack );
- return r;
- }
- // *****************************************************************************
- // SPI platform interface
- uint32_t platform_spi_setup( unsigned id, int mode, unsigned cpol, unsigned cpha, unsigned databits, uint32_t clock)
- {
- spi_master_init(id, cpol, cpha, databits, clock);
- return 1;
- }
- spi_data_type platform_spi_send_recv( unsigned id, spi_data_type data )
- {
- spi_mast_byte_write(id, &data);
- return data;
- }
- // ****************************************************************************
- // Flash access functions
- uint32_t platform_s_flash_write( const void *from, uint32_t toaddr, uint32_t size )
- {
- toaddr -= INTERNAL_FLASH_START_ADDRESS;
- SpiFlashOpResult r;
- const uint32_t blkmask = INTERNAL_FLASH_WRITE_UNIT_SIZE - 1;
- uint32_t *apbuf = NULL;
- if( ((uint32_t)from) & blkmask ){
- apbuf = (uint32_t *)c_malloc(size);
- if(!apbuf)
- return 0;
- c_memcpy(apbuf, from, size);
- }
- WRITE_PERI_REG(0x60000914, 0x73);
- r = flash_write(toaddr, apbuf?(uint32 *)apbuf:(uint32 *)from, size);
- if(apbuf)
- c_free(apbuf);
- if(SPI_FLASH_RESULT_OK == r)
- return size;
- else{
- NODE_ERR( "ERROR in flash_write: r=%d at %08X\n", ( int )r, ( unsigned )toaddr+INTERNAL_FLASH_START_ADDRESS );
- return 0;
- }
- }
- uint32_t platform_s_flash_read( void *to, uint32_t fromaddr, uint32_t size )
- {
- fromaddr -= INTERNAL_FLASH_START_ADDRESS;
- SpiFlashOpResult r;
- WRITE_PERI_REG(0x60000914, 0x73);
- r = flash_read(fromaddr, (uint32 *)to, size);
- if(SPI_FLASH_RESULT_OK == r)
- return size;
- else{
- NODE_ERR( "ERROR in flash_read: r=%d at %08X\n", ( int )r, ( unsigned )fromaddr+INTERNAL_FLASH_START_ADDRESS );
- return 0;
- }
- }
- int platform_flash_erase_sector( uint32_t sector_id )
- {
- WRITE_PERI_REG(0x60000914, 0x73);
- return flash_erase( sector_id ) == SPI_FLASH_RESULT_OK ? PLATFORM_OK : PLATFORM_ERR;
- }
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