mirror of
https://github.com/Valeh2012/PersonalVotingMachine
synced 2024-12-03 05:51:00 +02:00
107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/*
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u8x8cb.c
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*/
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#include "chip.h"
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#include "delay.h"
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#include "u8x8.h"
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/* although we use SW I2C, use the HW pins for later upgrade */
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#define I2C_CLOCK_PIN 13
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#define I2C_CLOCK_PORT 0
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#define I2C_DATA_PIN 17
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#define I2C_DATA_PORT 0
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uint8_t u8x8_gpio_and_delay_lpc824(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
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{
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switch(msg)
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{
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case U8X8_MSG_GPIO_AND_DELAY_INIT:
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/* only support for software I2C*/
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Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO13, PIN_MODE_PULLUP); /* clk */
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Chip_IOCON_PinMuxSet(LPC_IOCON, IOCON_PIO17, PIN_MODE_PULLUP); /* data */
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Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
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Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
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/*
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Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_SELECT_PORT, KEY_SELECT_PIN, KEY_SELECT_FN|IOCON_MODE_PULLUP);
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Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_SELECT_PORT, KEY_SELECT_PIN);
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Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_PREV_PORT, KEY_PREV_PIN, IOCON_MODE_PULLUP);
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Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_PREV_PORT, KEY_PREV_PIN);
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Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_NEXT_PORT, KEY_NEXT_PIN, IOCON_MODE_PULLUP);
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Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_NEXT_PORT, KEY_NEXT_PIN);
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Chip_IOCON_PinMuxSet(LPC_IOCON, KEY_HOME_PORT, KEY_HOME_PIN, KEY_HOME_FN|IOCON_MODE_PULLUP);
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Chip_GPIO_SetPinDIRInput(LPC_GPIO, KEY_HOME_PORT, KEY_HOME_PIN);
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*/
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break;
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case U8X8_MSG_DELAY_NANO:
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/* not required for SW I2C */
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break;
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case U8X8_MSG_DELAY_10MICRO:
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/* not used at the moment */
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break;
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case U8X8_MSG_DELAY_100NANO:
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/* not used at the moment */
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break;
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case U8X8_MSG_DELAY_MILLI:
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delay_micro_seconds(arg_int*1000UL);
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break;
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case U8X8_MSG_DELAY_I2C:
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/* arg_int is 1 or 4: 100KHz (5us) or 400KHz (1.25us) */
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delay_micro_seconds(arg_int<=2?5:1);
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break;
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case U8X8_MSG_GPIO_I2C_CLOCK:
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if ( arg_int == 0 )
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{
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Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
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Chip_GPIO_SetPinOutLow(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
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}
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else
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{
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//Chip_GPIO_SetPinOutHigh(LPC_GPIO, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
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Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_CLOCK_PORT, I2C_CLOCK_PIN);
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}
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break;
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case U8X8_MSG_GPIO_I2C_DATA:
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if ( arg_int == 0 )
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{
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Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
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Chip_GPIO_SetPinOutLow(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
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}
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else
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{
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//Chip_GPIO_SetPinOutHigh(LPC_GPIO, I2C_DATA_PORT, I2C_DATA_PIN);
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Chip_GPIO_SetPinDIRInput(LPC_GPIO_PORT, I2C_DATA_PORT, I2C_DATA_PIN);
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}
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break;
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/*
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case U8X8_MSG_GPIO_MENU_SELECT:
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u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_SELECT_PORT, KEY_SELECT_PIN));
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break;
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case U8X8_MSG_GPIO_MENU_NEXT:
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u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_NEXT_PORT, KEY_NEXT_PIN));
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break;
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case U8X8_MSG_GPIO_MENU_PREV:
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u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_PREV_PORT, KEY_PREV_PIN));
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break;
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case U8X8_MSG_GPIO_MENU_HOME:
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u8x8_SetGPIOResult(u8x8, Chip_GPIO_GetPinState(LPC_GPIO, KEY_HOME_PORT, KEY_HOME_PIN));
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break;
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*/
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default:
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u8x8_SetGPIOResult(u8x8, 1);
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break;
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}
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return 1;
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}
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