282 lines
10 KiB
C
282 lines
10 KiB
C
// Platform-specific functions
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#ifndef __PLATFORM_H__
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#define __PLATFORM_H__
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#include "cpu_esp8266.h"
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#include "c_types.h"
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#include "driver/pwm.h"
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// Error / status codes
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enum
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{
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PLATFORM_ERR,
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PLATFORM_OK,
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PLATFORM_UNDERFLOW = -1
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};
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// Platform initialization
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int platform_init(void);
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void platform_int_init(void);
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// ****************************************************************************
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// KEY_LED functions
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uint8_t platform_key_led( uint8_t level);
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// *****************************************************************************
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// GPIO subsection
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#define PLATFORM_GPIO_FLOAT 0
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#define PLATFORM_GPIO_PULLUP 1
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#define PLATFORM_GPIO_INT 2
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#define PLATFORM_GPIO_OUTPUT 1
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#define PLATFORM_GPIO_INPUT 0
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#define PLATFORM_GPIO_HIGH 1
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#define PLATFORM_GPIO_LOW 0
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/* GPIO interrupt handler */
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typedef void (* platform_gpio_intr_handler_fn_t)( unsigned pin, unsigned level );
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int platform_gpio_mode( unsigned pin, unsigned mode, unsigned pull );
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int platform_gpio_write( unsigned pin, unsigned level );
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int platform_gpio_read( unsigned pin );
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void platform_gpio_init( platform_gpio_intr_handler_fn_t cb );
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int platform_gpio_intr_init( unsigned pin, GPIO_INT_TYPE type );
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// *****************************************************************************
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// Timer subsection
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// Timer data type
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typedef uint32_t timer_data_type;
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// *****************************************************************************
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// CAN subsection
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// Maximum length for any CAN message
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#define PLATFORM_CAN_MAXLEN 8
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// eLua CAN ID types
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enum
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{
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ELUA_CAN_ID_STD = 0,
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ELUA_CAN_ID_EXT
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};
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int platform_can_exists( unsigned id );
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uint32_t platform_can_setup( unsigned id, uint32_t clock );
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int platform_can_send( unsigned id, uint32_t canid, uint8_t idtype, uint8_t len, const uint8_t *data );
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int platform_can_recv( unsigned id, uint32_t *canid, uint8_t *idtype, uint8_t *len, uint8_t *data );
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// *****************************************************************************
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// SPI subsection
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// There are 4 "virtual" SPI ports (SPI0...SPI3).
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#define PLATFORM_SPI_TOTAL 4
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// TODO: PLATFORM_SPI_TOTAL is not used - figure out purpose, or remove?
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// SPI mode
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#define PLATFORM_SPI_MASTER 1
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#define PLATFORM_SPI_SLAVE 0
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// SS values
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#define PLATFORM_SPI_SELECT_ON 1
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#define PLATFORM_SPI_SELECT_OFF 0
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// SPI enable/disable
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#define PLATFORM_SPI_ENABLE 1
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#define PLATFORM_SPI_DISABLE 0
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// SPI clock phase
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#define PLATFORM_SPI_CPHA_LOW 0
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#define PLATFORM_SPI_CPHA_HIGH 1
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// SPI clock polarity
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#define PLATFORM_SPI_CPOL_LOW 0
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#define PLATFORM_SPI_CPOL_HIGH 1
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// Data types
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typedef uint32_t spi_data_type;
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// The platform SPI functions
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int platform_spi_exists( unsigned id );
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uint32_t platform_spi_setup( uint8_t id, int mode, unsigned cpol, unsigned cpha, uint32_t clock_div);
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int platform_spi_send( uint8_t id, uint8_t bitlen, spi_data_type data );
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spi_data_type platform_spi_send_recv( uint8_t id, uint8_t bitlen, spi_data_type data );
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void platform_spi_select( unsigned id, int is_select );
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int platform_spi_set_mosi( uint8_t id, uint8_t offset, uint8_t bitlen, spi_data_type data );
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spi_data_type platform_spi_get_miso( uint8_t id, uint8_t offset, uint8_t bitlen );
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int platform_spi_transaction( uint8_t id, uint8_t cmd_bitlen, spi_data_type cmd_data,
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uint8_t addr_bitlen, spi_data_type addr_data,
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uint16_t mosi_bitlen, uint8_t dummy_bitlen, int16_t miso_bitlen );
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// *****************************************************************************
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// UART subsection
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// There are 3 "virtual" UART ports (UART0...UART2).
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#define PLATFORM_UART_TOTAL 3
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// TODO: PLATFORM_UART_TOTAL is not used - figure out purpose, or remove?
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// Note: Some CPUs (e.g. LM4F/TM4C) have more than 3 hardware UARTs
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// Parity
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enum
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{
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PLATFORM_UART_PARITY_NONE = 0,
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PLATFORM_UART_PARITY_EVEN = 1,
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PLATFORM_UART_PARITY_ODD = 2,
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PLATFORM_UART_PARITY_MARK = 3,
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PLATFORM_UART_PARITY_SPACE = 4
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};
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// Stop bits
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enum
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{
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PLATFORM_UART_STOPBITS_1 = 1,
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PLATFORM_UART_STOPBITS_2 = 2,
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PLATFORM_UART_STOPBITS_1_5 = 3
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};
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// Flow control types (this is a bit mask, one can specify PLATFORM_UART_FLOW_RTS | PLATFORM_UART_FLOW_CTS )
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#define PLATFORM_UART_FLOW_NONE 0
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#define PLATFORM_UART_FLOW_RTS 1
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#define PLATFORM_UART_FLOW_CTS 2
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// The platform UART functions
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int platform_uart_exists( unsigned id );
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uint32_t platform_uart_setup( unsigned id, uint32_t baud, int databits, int parity, int stopbits );
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int platform_uart_set_buffer( unsigned id, unsigned size );
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void platform_uart_send( unsigned id, uint8_t data );
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void platform_s_uart_send( unsigned id, uint8_t data );
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int platform_uart_recv( unsigned id, unsigned timer_id, timer_data_type timeout );
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int platform_s_uart_recv( unsigned id, timer_data_type timeout );
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int platform_uart_set_flow_control( unsigned id, int type );
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int platform_s_uart_set_flow_control( unsigned id, int type );
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void platform_uart_alt( int set );
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// *****************************************************************************
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// PWM subsection
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// There are 16 "virtual" PWM channels (PWM0...PWM15)
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#define PLATFORM_PWM_TOTAL 16
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// TODO: PLATFORM_PWM_TOTAL is not used - figure out purpose, or remove?
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#define NORMAL_PWM_DEPTH PWM_DEPTH
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#define NORMAL_DUTY(d) (((unsigned)(d)*NORMAL_PWM_DEPTH) / PWM_DEPTH)
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#define DUTY(d) ((uint16_t)( ((unsigned)(d)*PWM_DEPTH) / NORMAL_PWM_DEPTH) )
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// The platform PWM functions
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int platform_pwm_exists( unsigned id );
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uint32_t platform_pwm_setup( unsigned id, uint32_t frequency, unsigned duty );
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void platform_pwm_close( unsigned id );
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void platform_pwm_start( unsigned id );
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void platform_pwm_stop( unsigned id );
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uint32_t platform_pwm_set_clock( unsigned id, uint32_t data );
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uint32_t platform_pwm_get_clock( unsigned id );
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uint32_t platform_pwm_set_duty( unsigned id, uint32_t data );
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uint32_t platform_pwm_get_duty( unsigned id );
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// *****************************************************************************
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// The platform ADC functions
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// Functions requiring platform-specific implementation
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int platform_adc_update_sequence(void);
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int platform_adc_start_sequence(void);
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void platform_adc_stop( unsigned id );
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uint32_t platform_adc_set_clock( unsigned id, uint32_t frequency);
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int platform_adc_check_timer_id( unsigned id, unsigned timer_id );
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// ADC Common Functions
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int platform_adc_exists( unsigned id );
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uint32_t platform_adc_get_maxval( unsigned id );
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uint32_t platform_adc_set_smoothing( unsigned id, uint32_t length );
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void platform_adc_set_blocking( unsigned id, uint32_t mode );
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void platform_adc_set_freerunning( unsigned id, uint32_t mode );
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uint32_t platform_adc_is_done( unsigned id );
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void platform_adc_set_timer( unsigned id, uint32_t timer );
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// *****************************************************************************
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// I2C platform interface
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// I2C speed
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enum
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{
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PLATFORM_I2C_SPEED_SLOW = 100000,
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PLATFORM_I2C_SPEED_FAST = 400000
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};
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// I2C direction
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enum
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{
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PLATFORM_I2C_DIRECTION_TRANSMITTER,
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PLATFORM_I2C_DIRECTION_RECEIVER
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};
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int platform_i2c_exists( unsigned id );
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uint32_t platform_i2c_setup( unsigned id, uint8_t sda, uint8_t scl, uint32_t speed );
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void platform_i2c_send_start( unsigned id );
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void platform_i2c_send_stop( unsigned id );
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int platform_i2c_send_address( unsigned id, uint16_t address, int direction );
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int platform_i2c_send_byte( unsigned id, uint8_t data );
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int platform_i2c_recv_byte( unsigned id, int ack );
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// *****************************************************************************
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// Ethernet specific functions
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void platform_eth_send_packet( const void* src, uint32_t size );
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uint32_t platform_eth_get_packet_nb( void* buf, uint32_t maxlen );
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void platform_eth_force_interrupt(void);
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uint32_t platform_eth_get_elapsed_time(void);
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// *****************************************************************************
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// Internal flash erase/write functions
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uint32_t platform_flash_get_first_free_block_address( uint32_t *psect );
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uint32_t platform_flash_get_sector_of_address( uint32_t addr );
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uint32_t platform_flash_write( const void *from, uint32_t toaddr, uint32_t size );
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uint32_t platform_flash_read( void *to, uint32_t fromaddr, uint32_t size );
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uint32_t platform_s_flash_write( const void *from, uint32_t toaddr, uint32_t size );
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uint32_t platform_s_flash_read( void *to, uint32_t fromaddr, uint32_t size );
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uint32_t platform_flash_get_num_sectors(void);
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int platform_flash_erase_sector( uint32_t sector_id );
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/**
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* Translated a mapped address to a physical flash address, based on the
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* current flash cache mapping.
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* @param mapped_addr Address to translate (>= INTERNAL_FLASH_MAPPED_ADDRESS)
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* @return the corresponding physical flash address, or -1 if flash cache is
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* not currently active.
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* @see Cache_Read_Enable.
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*/
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uint32_t platform_flash_mapped2phys (uint32_t mapped_addr);
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// *****************************************************************************
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// Allocator support
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void* platform_get_first_free_ram( unsigned id );
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void* platform_get_last_free_ram( unsigned id );
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// *****************************************************************************
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// Other glue
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int platform_ow_exists( unsigned id );
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int platform_gpio_exists( unsigned id );
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int platform_tmr_exists( unsigned id );
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// *****************************************************************************
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// Helper macros
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#define MOD_CHECK_ID( mod, id )\
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if( !platform_ ## mod ## _exists( id ) )\
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return luaL_error( L, #mod" %d does not exist", ( unsigned )id )
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#define MOD_CHECK_TIMER( id )\
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if( id == PLATFORM_TIMER_SYS_ID && !platform_timer_sys_available() )\
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return luaL_error( L, "the system timer is not available on this platform" );\
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if( !platform_timer_exists( id ) )\
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return luaL_error( L, "timer %d does not exist", ( unsigned )id )\
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#define MOD_CHECK_RES_ID( mod, id, resmod, resid )\
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if( !platform_ ## mod ## _check_ ## resmod ## _id( id, resid ) )\
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return luaL_error( L, #resmod" %d not valid with " #mod " %d", ( unsigned )resid, ( unsigned )id )
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#endif
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