universal_drivers/hd44780u_driver
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This commit is contained in:
ChristianM_xp
2024-01-28 16:37:45 +01:00
parent 4f3c9c83cf
commit eaa5bbdcdc
2 changed files with 78 additions and 33 deletions
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72
lcd_hd44780.c
View File

@@ -2,9 +2,9 @@
#include <stddef.h>
void lcd_hd44780_writeToDisp(lcd_hd44780_t *inst){
inst->setGetDataIO_event(inst->DataGpio,inst->port_data,LCD_HD44780_SET);
inst->setGetGpio_event(&(inst->gpio_data),LCD_HD44780_SET);
}
/*
void lcd_hd44780_clearDisp(lcd_hd44780_t *inst){
return;
@@ -15,35 +15,67 @@ void lcd_hd44780_printf(lcd_hd44780_t *inst, char *string){
return;
}*/
static void lcd_writeCmd_disp(lcd_hd44780_t *inst, hd44780_cmd_t cmd, hd44780_setGet_t getSet){
inst->gpio_data.data_bus = cmd;
inst->gpio_data.rw_pin = getSet;
// We want to write an instruction.
inst->gpio_data.rs_pin = LCD_HD44780_INSTRUCTION;
// E pin is sopposed to be zero when data is ready on port.
inst->gpio_data.e_pin = 0;
inst->setGetGpio_event(&(inst->gpio_data),getSet);
// Then Clock data in with E pin:
inst->gpio_data.e_pin = 1;
inst->setGetGpio_event(&(inst->gpio_data),getSet);
// Then Clock data in with E pin:
inst->gpio_data.e_pin = 0;
inst->setGetGpio_event(&(inst->gpio_data),getSet);
}
void lcd_hd44780_regDataEvt(lcd_hd44780_t *inst ,void *inst_Data, setGet_DataGpio_Event_fpt getDataEvt_fpt){
void lcd_hd44780_regGpioEvt(lcd_hd44780_t *inst, setGet_Gpio_Event_fpt getGpioEvt_fpt){
if(inst == NULL)return;
if(inst_Data == NULL)return;
inst->DataGpio = inst_Data;
inst->setGetDataIO_event = getDataEvt_fpt;
//if(inst == NULL)return;
inst->setGetGpio_event = getGpioEvt_fpt;
}
void lcd_hd44780_regConfigEvt(lcd_hd44780_t *inst ,void *inst_Config, setGet_ConfigGpio_Event_fpt getConfigEvt_fpt){
if(inst == NULL)return;
if(inst_Config == NULL)return;
inst->SettingsGpio = inst_Config;
inst->setGetConfigIO_event = getConfigEvt_fpt;
return;
void lcd_hd44780_regWaitEvt(lcd_hd44780_t *inst, wait_ms_Event_fpt waitEvt_fpt){
//if(inst == NULL)return;
inst->wait_event = waitEvt_fpt;
}
void lcd_hd44780_init(lcd_hd44780_t *inst, lcd_hd44780_bitmode bit_mode){
inst->port_data = 0x00;
//inst->gpio_data = 0x00;
inst->bit_mode = bit_mode;
inst->gpio_data.data_bus = 0x0;
inst->gpio_data.e_pin = 0x0;
inst->gpio_data.rs_pin = 0x1;
inst->gpio_data.rw_pin = 0x0;
inst->setGetGpio_event(&(inst->gpio_data), 1);
lcd_writeCmd_disp(inst,LCD_HD44780_CLEAR_DISP,LCD_HD44780_SET);
//lcd_writeCmd_disp(inst,LCD_HD44780_DISP_ONOFF_CTL,LCD_HD44780_SET);
return;
}

39
lcd_hd44780.h
View File

@@ -17,7 +17,7 @@ typedef enum {
}lcd_hd44780_bitmode;
enum {
typedef enum {
LCD_HD44780_CLEAR_DISP = 0x1,
LCD_HD44780_RETURN_HOME = 0x2,
@@ -25,34 +25,47 @@ enum {
LCD_HD44780_DISP_ONOFF_CTL = 0x4,
LCD_HD44780_CURSOR_SHIFT = 0x6,
};
}hd44780_cmd_t;
enum{
typedef enum{
LCD_HD44780_GET = 0,
LCD_HD44780_SET = 1,
};
}hd44780_setGet_t;
typedef int (*setGet_DataGpio_Event_fpt)(void*, uint8_t data_input, uint8_t set_get )reentrant;
typedef int (*setGet_ConfigGpio_Event_fpt)(void*, uint8_t data_input, uint8_t set_get )reentrant;
typedef enum{
LCD_HD44780_INSTRUCTION = 0,
LCD_HD44780_DATA = 1,
}hd44780_InstData_t;
typedef struct {
uint8_t data_bus : 8;
hd44780_setGet_t rw_pin : 1;
uint8_t e_pin : 1;
hd44780_InstData_t rs_pin :1 ;
}hd44780_gpioset_t;
typedef int (*setGet_Gpio_Event_fpt)(hd44780_gpioset_t *data_input, uint8_t set_get)reentrant;
typedef int (*wait_ms_Event_fpt)(uint32_t delay_ms)reentrant;
typedef struct{
void *DataGpio;
void *SettingsGpio;
setGet_DataGpio_Event_fpt setGetDataIO_event;
setGet_ConfigGpio_Event_fpt setGetConfigIO_event;
setGet_Gpio_Event_fpt setGetGpio_event;
wait_ms_Event_fpt wait_event;
lcd_hd44780_bitmode bit_mode;
uint8_t port_data;
uint8_t port_settings;
hd44780_gpioset_t gpio_data;
}lcd_hd44780_t;
void lcd_hd44780_init(lcd_hd44780_t *inst,lcd_hd44780_bitmode bit_mode);
void lcd_hd44780_regConfigEvt(lcd_hd44780_t *inst , void *inst_Config, setGet_ConfigGpio_Event_fpt getConfigEvt_fpt);
void lcd_hd44780_regDataEvt(lcd_hd44780_t *inst , void *inst_Data, setGet_DataGpio_Event_fpt getDataEvt_fpt);
void lcd_hd44780_regGpioEvt(lcd_hd44780_t *inst, setGet_Gpio_Event_fpt getGpioEvt_fpt);
void lcd_hd44780_regWaitEvt(lcd_hd44780_t *inst, wait_ms_Event_fpt waitEvt_fpt);
#endif /*LCD_HD44780_H_*/