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106 lines
3.3 KiB
106 lines
3.3 KiB
/* |
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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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