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SPI comm function, untested

This commit is contained in:
devsaurus 2015-02-20 11:07:52 +01:00
parent 81be529d68
commit 6c0adbf980
2 changed files with 83 additions and 2 deletions
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80
app/modules/u8g.c
View File

@ -826,6 +826,83 @@ static uint8_t u8g_com_esp8266_ssd_start_sequence(u8g_t *u8g)
}
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 );
}
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_recv( 1, arg_val );
break;
case U8G_COM_MSG_WRITE_SEQ:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
platform_spi_send_recv( 1, *ptr++ );
arg_val--;
}
}
break;
case U8G_COM_MSG_WRITE_SEQ_P:
{
register uint8_t *ptr = arg_ptr;
while( arg_val > 0 )
{
platform_spi_send_recv( 1, u8g_pgm_read(ptr) );
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)
@ -915,7 +992,6 @@ uint8_t u8g_com_esp8266_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, voi
// device destructor
static int lu8g_close_display( lua_State *L )
{
@ -955,7 +1031,7 @@ static int lu8g_ssd1306_128x64_i2c( lua_State *L )
// build device entry
lud->dev.dev_fn = u8g_dev_ssd1306_128x64_fn;
lud->dev.dev_mem = &(lud->pb);
lud->dev.com_fn = u8g_com_esp8266_ssd_i2c_fn;
lud->dev.com_fn = U8G_COM_SSD_I2C;
// then allocate and populate page buffer
lud->pb.width = 128; // WIDTH in u8g_dev_ssd1306_128x64.c
if ((lud->pb.buf = (void *)c_zalloc(lud->pb.width)) == NULL)

5
app/u8glib/u8g.h
View File

@ -654,6 +654,7 @@ uint8_t u8g_com_arduino_port_d_wr_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, v
uint8_t u8g_com_arduino_no_en_parallel_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr); /* u8g_com_arduino_no_en_parallel.c */
uint8_t u8g_com_arduino_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr); /* u8g_com_arduino_ssd_i2c.c */
uint8_t u8g_com_esp8266_ssd_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr); /* u8g.c */
uint8_t u8g_com_esp8266_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr); /* u8g.c */
uint8_t u8g_com_arduino_uc_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
uint8_t u8g_com_arduino_t6963_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr); /* u8g_com_arduino_t6963.c */
@ -723,6 +724,10 @@ defined(__18CXX) || defined(__PIC32MX)
#define U8G_COM_HW_SPI u8g_com_atmega_hw_spi_fn
#define U8G_COM_ST7920_HW_SPI u8g_com_atmega_st7920_hw_spi_fn
#endif
#if defined(__XTENSA__)
#define U8G_COM_HW_SPI u8g_com_esp8266_hw_spi_fn
#define U8G_COM_ST7920_HW_SPI u8g_com_null_fn
#endif
#endif
#ifndef U8G_COM_HW_SPI
#define U8G_COM_HW_SPI u8g_com_null_fn