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move comm drivers to u8g_glue.c

This commit is contained in:
devsaurus 2016-09-20 23:59:23 +02:00
parent 492ee578ae
commit 837cf20633
4 changed files with 216 additions and 213 deletions
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213
app/modules/u8g.c
View File

@ -3,7 +3,6 @@
#include "module.h"
#include "lauxlib.h"
#include "lmem.h"
#include "platform.h"
#include "u8g.h"
#include "u8g_glue.h"
@ -770,212 +769,6 @@ static int lu8g_setFontLineSpacingFactor( lua_State *L )
}
// ------------------------------------------------------------
// comm functions
//
#define I2C_CMD_MODE 0x000
#define I2C_DATA_MODE 0x040
#define ESP_I2C_ID 0
static uint8_t do_i2c_start(uint8_t id, uint8_t sla)
{
platform_i2c_send_start( id );
// ignore return value -> tolerate missing ACK
platform_i2c_send_address( id, sla, PLATFORM_I2C_DIRECTION_TRANSMITTER );
return 1;
}
static uint8_t u8g_com_esp8266_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 ( do_i2c_start( ESP_I2C_ID, u8g->i2c_addr ) == 0 )
return 0;
if ( u8g->pin_list[U8G_PI_A0_STATE] == 0 )
{
// ignore return value -> tolerate missing ACK
if ( platform_i2c_send_byte( ESP_I2C_ID, I2C_CMD_MODE ) == 0 )
; //return 0;
}
else
{
platform_i2c_send_byte( ESP_I2C_ID, I2C_DATA_MODE );
}
u8g->pin_list[U8G_PI_SET_A0] = 0;
return 1;
}
static void lu8g_digital_write( u8g_t *u8g, uint8_t pin_index, uint8_t value )
{
uint8_t pin;
pin = u8g->pin_list[pin_index];
if ( pin != U8G_PIN_NONE )
platform_gpio_write( pin, value );
}
void u8g_Delay(u8g_t *u8g, uint16_t msec)
{
const uint16_t chunk = 50;
if (u8g->use_delay == 0)
return;
while (msec > chunk)
{
os_delay_us( chunk*1000 );
msec -= chunk;
}
if (msec > 0)
os_delay_us( msec*1000 );
}
void u8g_MicroDelay(void)
{
os_delay_us( 1 );
}
void u8g_10MicroDelay(void)
{
os_delay_us( 10 );
}
uint8_t u8g_com_esp8266_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_INIT:
// we assume that the SPI interface was already initialized
// just care for the /CS and D/C pins
lu8g_digital_write( u8g, U8G_PI_CS, PLATFORM_GPIO_HIGH );
platform_gpio_mode( u8g->pin_list[U8G_PI_CS], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
platform_gpio_mode( u8g->pin_list[U8G_PI_A0], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
lu8g_digital_write( u8g, U8G_PI_A0, arg_val == 0 ? PLATFORM_GPIO_LOW : PLATFORM_GPIO_HIGH );
break;
case U8G_COM_MSG_CHIP_SELECT:
if (arg_val == 0)
{
/* disable */
lu8g_digital_write( u8g, U8G_PI_CS, PLATFORM_GPIO_HIGH );
}
else
{
/* enable */
//u8g_com_arduino_digital_write(u8g, U8G_PI_SCK, LOW);
lu8g_digital_write( u8g, U8G_PI_CS, PLATFORM_GPIO_LOW );
}
break;
case U8G_COM_MSG_RESET:
if ( u8g->pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
lu8g_digital_write( u8g, U8G_PI_RESET, arg_val == 0 ? PLATFORM_GPIO_LOW : PLATFORM_GPIO_HIGH );
break;
case U8G_COM_MSG_WRITE_BYTE:
platform_spi_send( 1, 8, arg_val );
break;
case U8G_COM_MSG_WRITE_SEQ:
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
platform_spi_send( 1, 8, *ptr++ );
arg_val--;
}
}
break;
}
return 1;
}
uint8_t u8g_com_esp8266_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_INIT:
// we assume that the i2c bus was already initialized
//u8g_i2c_init(u8g->pin_list[U8G_PI_I2C_OPTION]);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
/* Currently disabled, but it could be enable. Previous restrictions have been removed */
/* u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val); */
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 */
platform_i2c_send_stop( ESP_I2C_ID );
}
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_esp8266_ssd_start_sequence(u8g) == 0 )
return platform_i2c_send_stop( ESP_I2C_ID ), 0;
// ignore return value -> tolerate missing ACK
if ( platform_i2c_send_byte( ESP_I2C_ID, arg_val) == 0 )
; //return platform_i2c_send_stop( ESP_I2C_ID ), 0;
// platform_i2c_send_stop( ESP_I2C_ID );
break;
case U8G_COM_MSG_WRITE_SEQ:
case U8G_COM_MSG_WRITE_SEQ_P:
//u8g->pin_list[U8G_PI_SET_A0] = 1;
if ( u8g_com_esp8266_ssd_start_sequence(u8g) == 0 )
return platform_i2c_send_stop( ESP_I2C_ID ), 0;
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
// ignore return value -> tolerate missing ACK
if ( platform_i2c_send_byte( ESP_I2C_ID, *ptr++) == 0 )
; //return platform_i2c_send_stop( ESP_I2C_ID ), 0;
arg_val--;
}
}
// platform_i2c_send_stop( ESP_I2C_ID );
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 */
break;
}
return 1;
}
// device destructor
static int lu8g_close_display( lua_State *L )
{
@ -1019,8 +812,8 @@ static int lu8g_close_display( lua_State *L )
lu8g_userdata_t *lud = (lu8g_userdata_t *) lua_newuserdata( L, sizeof( lu8g_userdata_t ) ); \
lud->cb_ref = LUA_NOREF; \
\
lud->u8g.i2c_addr = (uint8_t)addr; \
lud->u8g.use_delay = del > 0 ? 1 : 0; \
lud->i2c_addr = (uint8_t)addr; \
lud->use_delay = del > 0 ? 1 : 0; \
\
u8g_InitI2C( LU8G, &u8g_dev_ ## device, U8G_I2C_OPT_NONE); \
\
@ -1053,7 +846,7 @@ U8G_DISPLAY_TABLE_I2C
lu8g_userdata_t *lud = (lu8g_userdata_t *) lua_newuserdata( L, sizeof( lu8g_userdata_t ) ); \
lud->cb_ref = LUA_NOREF; \
\
lud->u8g.use_delay = del > 0 ? 1 : 0; \
lud->use_delay = del > 0 ? 1 : 0; \
\
u8g_InitHWSPI( LU8G, &u8g_dev_ ## device, cs, dc, res ); \
\

211
app/modules/u8g_glue.c
View File

@ -3,6 +3,7 @@
*/
#include "lauxlib.h"
#include "platform.h"
#include "c_stdlib.h"
@ -10,6 +11,216 @@
#include "u8g_glue.h"
// ------------------------------------------------------------
// comm functions
//
#define I2C_CMD_MODE 0x000
#define I2C_DATA_MODE 0x040
#define ESP_I2C_ID 0
static uint8_t do_i2c_start(uint8_t id, uint8_t sla)
{
platform_i2c_send_start( id );
// ignore return value -> tolerate missing ACK
platform_i2c_send_address( id, sla, PLATFORM_I2C_DIRECTION_TRANSMITTER );
return 1;
}
static uint8_t u8g_com_esp8266_ssd_start_sequence(struct _lu8g_userdata_t *lu8g)
{
/* are we requested to set the a0 state? */
if ( lu8g->u8g.pin_list[U8G_PI_SET_A0] == 0 )
return 1;
/* setup bus, might be a repeated start */
if ( do_i2c_start( ESP_I2C_ID, lu8g->i2c_addr ) == 0 )
return 0;
if ( lu8g->u8g.pin_list[U8G_PI_A0_STATE] == 0 )
{
// ignore return value -> tolerate missing ACK
if ( platform_i2c_send_byte( ESP_I2C_ID, I2C_CMD_MODE ) == 0 )
; //return 0;
}
else
{
platform_i2c_send_byte( ESP_I2C_ID, I2C_DATA_MODE );
}
lu8g->u8g.pin_list[U8G_PI_SET_A0] = 0;
return 1;
}
static void lu8g_digital_write( struct _lu8g_userdata_t *lu8g, uint8_t pin_index, uint8_t value )
{
uint8_t pin;
pin = lu8g->u8g.pin_list[pin_index];
if ( pin != U8G_PIN_NONE )
platform_gpio_write( pin, value );
}
void u8g_Delay(u8g_t *u8g, uint16_t msec)
{
struct _lu8g_userdata_t *lu8g = (struct _lu8g_userdata_t *)u8g;
const uint16_t chunk = 50;
if (lu8g->use_delay == 0)
return;
while (msec > chunk)
{
os_delay_us( chunk*1000 );
msec -= chunk;
}
if (msec > 0)
os_delay_us( msec*1000 );
}
void u8g_MicroDelay(void)
{
os_delay_us( 1 );
}
void u8g_10MicroDelay(void)
{
os_delay_us( 10 );
}
uint8_t u8g_com_esp8266_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
struct _lu8g_userdata_t *lu8g = (struct _lu8g_userdata_t *)u8g;
switch(msg)
{
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_INIT:
// we assume that the SPI interface was already initialized
// just care for the /CS and D/C pins
lu8g_digital_write( lu8g, U8G_PI_CS, PLATFORM_GPIO_HIGH );
platform_gpio_mode( lu8g->u8g.pin_list[U8G_PI_CS], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
platform_gpio_mode( lu8g->u8g.pin_list[U8G_PI_A0], PLATFORM_GPIO_OUTPUT, PLATFORM_GPIO_FLOAT );
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
lu8g_digital_write( lu8g, U8G_PI_A0, arg_val == 0 ? PLATFORM_GPIO_LOW : PLATFORM_GPIO_HIGH );
break;
case U8G_COM_MSG_CHIP_SELECT:
if (arg_val == 0)
{
/* disable */
lu8g_digital_write( lu8g, U8G_PI_CS, PLATFORM_GPIO_HIGH );
}
else
{
/* enable */
lu8g_digital_write( lu8g, U8G_PI_CS, PLATFORM_GPIO_LOW );
}
break;
case U8G_COM_MSG_RESET:
if ( lu8g->u8g.pin_list[U8G_PI_RESET] != U8G_PIN_NONE )
lu8g_digital_write( lu8g, U8G_PI_RESET, arg_val == 0 ? PLATFORM_GPIO_LOW : PLATFORM_GPIO_HIGH );
break;
case U8G_COM_MSG_WRITE_BYTE:
platform_spi_send( 1, 8, arg_val );
break;
case U8G_COM_MSG_WRITE_SEQ:
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
platform_spi_send( 1, 8, *ptr++ );
arg_val--;
}
}
break;
}
return 1;
}
uint8_t u8g_com_esp8266_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
struct _lu8g_userdata_t *lu8g = (struct _lu8g_userdata_t *)u8g;
switch(msg)
{
case U8G_COM_MSG_INIT:
// we assume that the i2c bus was already initialized
//u8g_i2c_init(u8g->pin_list[U8G_PI_I2C_OPTION]);
break;
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_RESET:
/* Currently disabled, but it could be enable. Previous restrictions have been removed */
/* u8g_com_arduino_digital_write(u8g, U8G_PI_RESET, arg_val); */
break;
case U8G_COM_MSG_CHIP_SELECT:
lu8g->u8g.pin_list[U8G_PI_A0_STATE] = 0;
lu8g->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 */
platform_i2c_send_stop( ESP_I2C_ID );
}
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_esp8266_ssd_start_sequence(lu8g) == 0 )
return platform_i2c_send_stop( ESP_I2C_ID ), 0;
// ignore return value -> tolerate missing ACK
if ( platform_i2c_send_byte( ESP_I2C_ID, arg_val) == 0 )
; //return platform_i2c_send_stop( ESP_I2C_ID ), 0;
// platform_i2c_send_stop( ESP_I2C_ID );
break;
case U8G_COM_MSG_WRITE_SEQ:
case U8G_COM_MSG_WRITE_SEQ_P:
//u8g->pin_list[U8G_PI_SET_A0] = 1;
if ( u8g_com_esp8266_ssd_start_sequence(lu8g) == 0 )
return platform_i2c_send_stop( ESP_I2C_ID ), 0;
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
// ignore return value -> tolerate missing ACK
if ( platform_i2c_send_byte( ESP_I2C_ID, *ptr++) == 0 )
; //return platform_i2c_send_stop( ESP_I2C_ID ), 0;
arg_val--;
}
}
// platform_i2c_send_stop( ESP_I2C_ID );
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
lu8g->u8g.pin_list[U8G_PI_A0_STATE] = arg_val;
lu8g->u8g.pin_list[U8G_PI_SET_A0] = 1; /* force a0 to set again */
break;
}
return 1;
}
// ***************************************************************************
// Generic framebuffer device and RLE comm driver
//

2
app/modules/u8g_glue.h
View File

@ -7,6 +7,8 @@
struct _lu8g_userdata_t
{
u8g_t u8g;
uint8_t i2c_addr;
uint8_t use_delay;
int cb_ref;
};
typedef struct _lu8g_userdata_t lu8g_userdata_t;

3
app/u8glib/u8g.h
View File

@ -1178,9 +1178,6 @@ struct _u8g_t
u8g_state_cb state_cb;
u8g_box_t current_page; /* current box of the visible page */
uint8_t i2c_addr;
uint8_t use_delay;
};
#define u8g_GetFontAscent(u8g) ((u8g)->font_ref_ascent)