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/*
u8x8cb.c
*/
#include "chip.h"
#include "delay.h"
#include "u8x8.h"
/* although we use SW I2C, use the HW pins for later upgrade */
#define I2C_CLOCK_PIN 13
#define I2C_CLOCK_PORT 0
#define I2C_DATA_PIN 17
#define I2C_DATA_PORT 0
uint8_t u8x8_gpio_and_delay_lpc824(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
switch(msg)
{
case U8X8_MSG_GPIO_AND_DELAY_INIT:
/* only support for software I2C*/
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO13, PIN_MODE_PULLUP); /* clk */
Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO17, PIN_MODE_PULLUP); /* data */
Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
/*
Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_SELECT_PORT, KEY_SELECT_PIN, KEY_SELECT_FN|IOCON_MODE_PULLUP);
Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_SELECT_PORT, KEY_SELECT_PIN);
Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_PREV_PORT, KEY_PREV_PIN, IOCON_MODE_PULLUP);
Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_PREV_PORT, KEY_PREV_PIN);
Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_NEXT_PORT, KEY_NEXT_PIN, IOCON_MODE_PULLUP);
Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_NEXT_PORT, KEY_NEXT_PIN);
Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_HOME_PORT, KEY_HOME_PIN, KEY_HOME_FN|IOCON_MODE_PULLUP);
Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_HOME_PORT, KEY_HOME_PIN);
*/
break;
case U8X8_MSG_DELAY_NANO:
/* not required for SW I2C */
break;
case U8X8_MSG_DELAY_10MICRO:
/* not used at the moment */
break;
case U8X8_MSG_DELAY_100NANO:
/* not used at the moment */
break;
case U8X8_MSG_DELAY_MILLI:
delay_micro_seconds(arg_int*1000UL);
break;
case U8X8_MSG_DELAY_I2C:
/* arg_int is 1 or 4: 100KHz (5us) or 400KHz (1.25us) */
delay_micro_seconds(arg_int<=2?5:1);
break;
case U8X8_MSG_GPIO_I2C_CLOCK:
if ( arg_int == 0 )
{
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
Chip_GPIO_SetPinOutLow(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
}
else
{
//Chip_GPIO_SetPinOutHigh(LPC_GPIO, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
}
break;
case U8X8_MSG_GPIO_I2C_DATA:
if ( arg_int == 0 )
{
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
Chip_GPIO_SetPinOutLow(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
}
else
{
//Chip_GPIO_SetPinOutHigh(LPC_GPIO, I2C_DATA_PORT, I2C_DATA_PIN);
Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
}
break;
/*
case U8X8_MSG_GPIO_MENU_SELECT:
u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_SELECT_PORT, KEY_SELECT_PIN));
break;
case U8X8_MSG_GPIO_MENU_NEXT:
u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_NEXT_PORT, KEY_NEXT_PIN));
break;
case U8X8_MSG_GPIO_MENU_PREV:
u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_PREV_PORT, KEY_PREV_PIN));
break;
case U8X8_MSG_GPIO_MENU_HOME:
u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_HOME_PORT, KEY_HOME_PIN));
break;
*/
default:
u8x8_SetGPIOResult(u8x8, 1);
break;
}
return 1;
}