Diff: u8glibARM/u8g_com_raspberrypi_ssd_i2c.c

Revision:

2:6cd3b0947188

Parent:

1:0e75de2a5d21

Child:

3:4cd9171ba989

--- a/u8glibARM/u8g_com_raspberrypi_ssd_i2c.c	Mon Jun 13 02:21:11 2016 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,177 +0,0 @@
-/*  
-  Special pin usage:
-    U8G_PI_I2C_OPTION	additional options
-    U8G_PI_A0_STATE	used to store the last value of the command/data register selection
-    U8G_PI_SET_A0		1: Signal request to update I2C device with new A0_STATE, 0: Do nothing, A0_STATE matches I2C device
-    U8G_PI_SCL		clock line (NOT USED)
-    U8G_PI_SDA		data line (NOT USED)
-    
-    U8G_PI_RESET		reset line (currently disabled, see below)
-
-  Protocol:
-    SLA, Cmd/Data Selection, Arguments
-    The command/data register is selected by a special instruction byte, which is sent after SLA
-    
-    The continue bit is always 0 so that a (re)start is equired for the change from cmd to/data mode
-*/
-
-#include "u8g.h"
-
-#if defined(U8G_RASPBERRY_PI)
-
-#include <wiringPi.h>
-#include <wiringPiI2C.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-
-#define I2C_SLA		0x3c
-#define I2C_CMD_MODE	0x000
-#define I2C_DATA_MODE	0x040
-
-#if defined(U8G_WITH_PINLIST)
-
-uint8_t u8g_com_raspberrypi_ssd_start_sequence(u8g_t *u8g)
-{
-  /* are we requested to set the a0 state? */
-  if ( u8g->pin_list[U8G_PI_SET_A0] == 0 )
-    return 1;	
-  
-  /* setup bus, might be a repeated start */
-  if ( u8g_i2c_start(I2C_SLA) == 0 )
-    return 0;
-  if ( u8g->pin_list[U8G_PI_A0_STATE] == 0 )
-  {
-    if ( u8g_i2c_send_mode(I2C_CMD_MODE) == 0 )
-      return 0;
-  }
-  else
-  {
-    if ( u8g_i2c_send_mode(I2C_DATA_MODE) == 0 )
-      return 0;
-  }
-  
-  
-  u8g->pin_list[U8G_PI_SET_A0] = 0;
-  return 1;
-}
-
-uint8_t u8g_com_raspberrypi_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
-{
-  switch(msg)
-  {
-    case U8G_COM_MSG_INIT:
-      u8g_i2c_init(u8g->pin_list[U8G_PI_I2C_OPTION]);
-      u8g_SetPIOutput(u8g, U8G_PI_RESET);
-      u8g_SetPIOutput(u8g, U8G_PI_A0);
-      break;
-    
-    case U8G_COM_MSG_STOP:
-      break;
-
-    case U8G_COM_MSG_RESET:
-      break;
-      
-    case U8G_COM_MSG_CHIP_SELECT:
-      u8g->pin_list[U8G_PI_A0_STATE] = 0;
-      u8g->pin_list[U8G_PI_SET_A0] = 1;		/* force a0 to set again, also forces start condition */
-      if ( arg_val == 0 )
-      {
-        /* disable chip, send stop condition */
-	u8g_i2c_stop();
-     }
-      else
-      {
-        /* enable, do nothing: any byte writing will trigger the i2c start */
-      }
-      break;
-
-    case U8G_COM_MSG_WRITE_BYTE:
-      //u8g->pin_list[U8G_PI_SET_A0] = 1;
-      if ( u8g_com_raspberrypi_ssd_start_sequence(u8g) == 0 )
-	return u8g_i2c_stop(), 0;
-      if ( u8g_i2c_send_byte(arg_val) == 0 )
-	return u8g_i2c_stop(), 0;
-      // u8g_i2c_stop();
-      break;
-    
-    case U8G_COM_MSG_WRITE_SEQ:
-      //u8g->pin_list[U8G_PI_SET_A0] = 1;
-      if ( u8g_com_raspberrypi_ssd_start_sequence(u8g) == 0 )
-	return u8g_i2c_stop(), 0;
-      {
-        register uint8_t *ptr = (uint8_t *)arg_ptr;
-        while( arg_val > 0 )
-        {
-	  if ( u8g_i2c_send_byte(*ptr++) == 0 )
-	    return u8g_i2c_stop(), 0;
-          arg_val--;
-        }
-      }
-      // u8g_i2c_stop();
-      break;
-
-    case U8G_COM_MSG_WRITE_SEQ_P:
-      //u8g->pin_list[U8G_PI_SET_A0] = 1;
-      if ( u8g_com_raspberrypi_ssd_start_sequence(u8g) == 0 )
-	return u8g_i2c_stop(), 0;
-      {
-        register uint8_t *ptr = (uint8_t *)arg_ptr;
-        while( arg_val > 0 )
-        {
-	  if ( u8g_i2c_send_byte(u8g_pgm_read(ptr)) == 0 )
-	    return 0;
-          ptr++;
-          arg_val--;
-        }
-      }
-      // u8g_i2c_stop();
-      break;
-      
-    case U8G_COM_MSG_ADDRESS:                     /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
-      u8g->pin_list[U8G_PI_A0_STATE] = arg_val;
-      u8g->pin_list[U8G_PI_SET_A0] = 1;		/* force a0 to set again */
-    
-#ifdef OLD_CODE    
-      if ( i2c_state != 0 )
-      {
-	u8g_i2c_stop();
-	i2c_state = 0;
-      }
-
-      if ( u8g_com_raspberrypi_ssd_start_sequence(arg_val) == 0 )
-	return 0;
-    
-      /* setup bus, might be a repeated start */
-      /*
-      if ( u8g_i2c_start(I2C_SLA) == 0 )
-	return 0;
-      if ( arg_val == 0 )
-      {
-	i2c_state = 1;
-	
-	if ( u8g_i2c_send_byte(I2C_CMD_MODE) == 0 )
-	  return 0;
-      }
-      else
-      {
-	i2c_state = 2;
-	if ( u8g_i2c_send_byte(I2C_DATA_MODE) == 0 )
-	  return 0;
-      }
-      */
-#endif
-      break;
-  }
-  return 1;
-}
-
-#else	/* defined(U8G_WITH_PINLIST) */
-
-uint8_t u8g_com_raspberrypi_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
-   return 1;
-}
-
-#endif	/* defined(U8G_WITH_PINLIST) */
-#endif
-