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u8g2-copy
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update

This commit is contained in:
olikraus 2021-07-06 19:27:12 +01:00
parent 4bc1b0bf3c
commit 31493b40d9
2 changed files with 50 additions and 4 deletions
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47
sys/raspi_gpio/hal/raspi_gpio_hal.c
View File

@ -72,6 +72,39 @@ int gpio_direction(int pin, int dir)
return 1;
}
int gpio_fd[U8X8_PIN_CNT];
int gpio_prepare_write(int msg, int pin)
{
char path[256];
snprintf(path, 256, "/sys/class/gpio/gpio%d/value", pin);
gpio_fd[msg] = open(path, O_WRONLY);
if (gpio_fd[msg] < 0)
return perror(path), 0;
printf("prepare write success '%s' fd %d msg %d\n", path, gpio_fd[msg], msg);
return 1;
}
int gpio_quick_write(int msg, int value)
{
int res;
//printf("quick write fd %d msg %d\n", gpio_fd[msg], msg);
if ( msg > U8X8_PIN_OUTPUT_CNT )
exit(0);
switch (value)
{
case 0 : res = write(gpio_fd[msg] ,"0",1); break;
default: res = write(gpio_fd[msg] ,"1",1); break;
}
if (res < 0)
return perror("quick_write"), 0;
return 1;
}
int gpio_write(int pin, int value)
{
char path[256];
@ -96,9 +129,12 @@ int gpio_write(int pin, int value)
uint8_t u8x8_gpio_and_delay_raspi_gpio_hal(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr)
{
int i;
//printf("msg %d\n", msg);
switch(msg)
{
case U8X8_MSG_GPIO_I2C_CLOCK: // arg_int=0: Output low at I2C clock pin
//printf("i2c clock msg %d %d\n", msg, U8X8_MSG_GPIO_I2C_CLOCK);
case U8X8_MSG_GPIO_I2C_DATA: // arg_int=0: Output low at I2C data pin
case U8X8_MSG_GPIO_D0: // D0 or SPI clock pin: Output level in arg_int
case U8X8_MSG_GPIO_D1: // D1 or SPI data pin: Output level in arg_int
@ -114,7 +150,12 @@ uint8_t u8x8_gpio_and_delay_raspi_gpio_hal(u8x8_t *u8x8, uint8_t msg, uint8_t ar
case U8X8_MSG_GPIO_RESET: // Reset pin: Output level in arg_int
case U8X8_MSG_GPIO_CS1: // CS1 (chip select) pin: Output level in arg_int
case U8X8_MSG_GPIO_CS2: // CS2 (chip select) pin: Output level in arg_int
gpio_write(u8x8_GetPinValue(u8x8, msg), arg_int);
if ( u8x8_GetPinValue(u8x8, msg) != U8X8_PIN_NONE )
{
//gpio_write(u8x8_GetPinValue(u8x8, msg), arg_int);
//printf("gpio msg %d\n", msg);
gpio_quick_write(u8x8_GetPinIndex(u8x8, msg), arg_int);
}
break;
case U8X8_MSG_GPIO_AND_DELAY_INIT: // called once during init phase of u8g2/u8x8
@ -123,7 +164,9 @@ uint8_t u8x8_gpio_and_delay_raspi_gpio_hal(u8x8_t *u8x8, uint8_t msg, uint8_t ar
{
if ( i < U8X8_PIN_OUTPUT_CNT )
{
gpio_export(u8x8->pins[i]);
gpio_direction(u8x8->pins[i], 1);
gpio_prepare_write(i, u8x8->pins[i]);
}
else
{
@ -163,7 +206,7 @@ uint8_t u8x8_gpio_and_delay_raspi_gpio_hal(u8x8_t *u8x8, uint8_t msg, uint8_t ar
u8x8_SetGPIOResult(u8x8, /* get menu home pin state */ 0);
break;
default:
u8x8_SetGPIOResult(u8x8, 1); // default return value
//u8x8_SetGPIOResult(u8x8, 1); // default return value
break;
}
return 1;

7
sys/raspi_gpio/u8g2_hello_world/main.c
View File

@ -11,7 +11,10 @@ int main(void)
u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_I2C_DATA, 6);
u8g2_InitDisplay(&u8g2); // send init sequence to the display, display is in sleep mode after this,
u8g2_SetPowerSave(&u8g2, 0); // wake up display
u8g2_SetFont(&u8g2, u8g2_font_6x12_tr);
u8g2_DrawStr(&u8g2, 0, 20, "Hello World!");
u8g2_ClearBuffer(&u8g2);
u8g2_SendBuffer(&u8g2);
u8g2_SetFont(&u8g2, u8g2_font_helvB24_tr);
u8g2_DrawStr(&u8g2, 0, 50, "Hello");
u8g2_DrawStr(&u8g2, 0, 100, "World!");
u8g2_SendBuffer(&u8g2);
}