/**
 * Protocol is under GNU/GPL2!
 * Author: Benedikt Sauter sauter@empronix.com, 2007-09-02
 * 
 * BYTE	      command
 * BYTE	      parameter
 * BYTE	      length body <x>
 * <x> BYTES  body
 *
 * max body length = 60 bytes
 */

/**
 * The first byte in the body of an response packet 
 * is always a value from the next table.
 */

#define RSP_OK                          0x01
#define RSP_ERROR                       0x02
#define RSP_UNKOWN_CMD                  0x03
#define RSP_UNKOWN_PIN                  0x04
#define RSP_UNKOWN_PORT                 0x05
#define RSP_WRONG_PIN_CONFIG            0x06
#define RSP_IMPOSSIBLE_PIN_CONFIG       0x07
#define RSP_TIMEOUT                     0x08


#define CMD_LATENCY_TIMER_SET           0x01
#define CMD_LATENCY_TIMER_GET           0x02
#define CMD_GET_HW_ID                   0x03
#define CMD_EXTERNAL_DEVICE             0x06

#define CMD_IO_INIT_PORT                0x10
#define CMD_IO_INIT_PIN                 0x11
#define CMD_IO_PORT_DIRECTION_IN        0x12
#define CMD_IO_PORT_DIRECTION_OUT       0x13
#define CMD_IO_PORT_DIRECTION_TRI       0x14
#define CMD_IO_PIN_DIRECTION_IN         0x15
#define CMD_IO_PIN_DIRECTION_OUT        0x16
#define CMD_IO_PIN_DIRECTION_TRI        0x17
#define CMD_IO_PORT_SET                 0x18
#define CMD_IO_PORT_GET                 0x19
#define CMD_IO_PIN_SET                  0x1A
#define CMD_IO_PIN_GET                  0x1B

#define CMD_ADC_INIT_PIN                0x20
#define CMD_ADC_GET                     0x21
#define CMD_ADC_REF                     0x22

#define CMD_I2C_INIT                    0x30
#define CMD_I2C_DEINIT                  0x31
#define CMD_I2C_SET_BITRATE             0x32
#define CMD_I2C_SEND                    0x34
#define CMD_I2C_RECV                    0x35
#define CMD_I2C_SEND_START              0x36
#define CMD_I2C_SEND_STOP               0x37

#define CMD_SPI_INIT                    0x40
#define CMD_SPI_DEINIT                  0x41
#define CMD_SPI_SPEED                   0x42
#define CMD_SPI_SEND                    0x43
#define CMD_SPI_RECV                    0x44
#define CMD_SPI_SEND_AND_RECV           0x45


#define CMD_PWM_INIT_PIN                0x50
#define CMD_PWM_DEINIT_PIN              0x51
#define CMD_PWM_SPEED                   0x52
#define CMD_PWM_VALUE                   0x53


#define CMD_UART_INIT			0x60
#define CMD_UART_DEINIT			0x61
#define CMD_UART_BAUDRATE		0x62
#define CMD_UART_STOPBITS		0x63
#define CMD_UART_DATABITS		0x64
#define CMD_UART_PARITY			0x65
#define CMD_UART_RECV			0x67
#define CMD_UART_SEND			0x68


#define PARAM_ADC_AREF                  0x01
#define PARAM_ADC_AVCC                  0x02
#define PARAM_ADC_INTERNAL              0x03


/* microwire eeprom */
#define CMD_EXTERNAL_93C46              0x01


#define CMD_93C46_INIT                  0x01
#define CMD_93C46_DEINIT                0x02
#define CMD_93C46_READ                  0x03
#define CMD_93C46_WRITE                 0x04