commit 35c8d0a59126ce89555c9747b03cb65c050da664 parent 2068d6e7d5126387f761357f57dcd6b450dbb27e Author: Martin Kloeckner <mjkloeckner@gmail.com> Date: Sun, 3 May 2026 21:05:34 -0300 Reescribir secuencia de inicializacion del display Diffstat:
| M | firmware-nucleo/App/Src/display_i2c.c | | | 94 | ++++++++++++++++++++++++++++++++++++++++--------------------------------------- |
1 file changed, 48 insertions(+), 46 deletions(-) diff --git a/firmware-nucleo/App/Src/display_i2c.c b/firmware-nucleo/App/Src/display_i2c.c @@ -13,36 +13,43 @@ #include "dwt.h" #include "systick.h" -#define DISPLAY_I2C_ADDRESS 0x27 -#define DISPLAY_ASYNC_QUEUE_LEN 256 -#define DISPLAY_ASYNC_CLEAR_DEL_MS 2ul - -#define DISPLAY_CMD_CLEAR_DISPLAY 0b00000001 -#define DISPLAY_CMD_SET_CURSOR_HOME 0b00000010 -#define DISPLAY_CMD_ENTRY_MODE_SET 0b00000100 -#define DISPLAY_CMD_DISPLAY_CONTROL 0b00001000 -#define DISPLAY_CMD_FUNCTION_SET 0b00100000 -#define DISPLAY_DDRAM_ADDR 0b10000000 - -#define DISPLAY_CMD_FUNCTION_SET_8BITS 0b00010000 -#define DISPLAY_CMD_FUNCTION_SET_4BITS 0b00100000 -#define DISPLAY_CMD_FUNCTION_SET_5x8DOTS 0b00000000 -#define DISPLAY_CMD_FUNCTION_SET_2LINES 0b00001000 - -#define DISPLAY_CMD_ENTRY_MODE_SET_INCREMENT_CURSOR 0b00000010 -#define DISPLAY_CMD_ENTRY_MODE_SET_DECREMENT_CURSOR 0b00000000 -#define DISPLAY_CMD_ENTRY_MODE_SET_SHIFT 0b00000001 -#define DISPLAY_CMD_ENTRY_MODE_SET_NO_SHIFT 0b00000000 - -#define DISPLAY_CMD_DISPLAY_CONTROL_DISPLAY_ON 0b00000100 -#define DISPLAY_CMD_DISPLAY_CONTROL_DISPLAY_OFF 0b00000000 -#define DISPLAY_CMD_DISPLAY_CONTROL_CURSOR_ON 0b00000010 -#define DISPLAY_CMD_DISPLAY_CONTROL_CURSOR_OFF 0b00000000 -#define DISPLAY_CMD_DISPLAY_CONTROL_BLINK_ON 0b00000001 -#define DISPLAY_CMD_DISPLAY_CONTROL_BLINK_OFF 0b00000000 +#define DISPLAY_I2C_ADDRESS 0x27 +#define DISPLAY_ASYNC_QUEUE_LEN 256 +#define DISPLAY_ASYNC_CLEAR_DEL_MS 2ul #define DISPLAY_TICK_CNT_INI_MS 0ul #define DISPLAY_TICK_DMA_TIMEOUT_MS 100ul +#define DISPLAY_INIT_SET_8BIT 0x03 +#define DISPLAY_INIT_SET_4BIT 0x02 + +#define DISPLAY_CMD_CLEAR_DISPLAY 0x01 +#define DISPLAY_CMD_SET_CURSOR_HOME 0x02 +#define DISPLAY_CMD_ENTRY_MODE_SET 0x04 +#define DISPLAY_CMD_DISPLAY_CONTROL 0x08 +#define DISPLAY_CMD_SHIFT_CONTROL 0x10 +#define DISPLAY_CMD_FUNCTION_SET 0x20 +#define DISPLAY_CGRAM_ADDR 0x40 +#define DISPLAY_DDRAM_ADDR 0x80 + +#define DISPLAY_CMD_FUNCTION_SET_8BITS 0x10 +#define DISPLAY_CMD_FUNCTION_SET_4BITS 0x00 +#define DISPLAY_CMD_FUNCTION_SET_5x8DOTS 0x00 +#define DISPLAY_CMD_FUNCTION_SET_2LINES 0x08 +#define DISPLAY_CMD_FUNCTION_SET_1LINE 0x00 +#define DISPLAY_CMD_FUNCTION_SET_5x10DOTS 0x04 + +#define DISPLAY_CMD_ENTRY_MODE_SET_INCREMENT_CURSOR 0x02 +#define DISPLAY_CMD_ENTRY_MODE_SET_DECREMENT_CURSOR 0x00 +#define DISPLAY_CMD_ENTRY_MODE_SET_SHIFT 0x01 +#define DISPLAY_CMD_ENTRY_MODE_SET_NO_SHIFT 0x00 + +#define DISPLAY_CMD_DISPLAY_CONTROL_DISPLAY_ON 0x04 +#define DISPLAY_CMD_DISPLAY_CONTROL_DISPLAY_OFF 0x00 +#define DISPLAY_CMD_DISPLAY_CONTROL_CURSOR_ON 0x02 +#define DISPLAY_CMD_DISPLAY_CONTROL_CURSOR_OFF 0x00 +#define DISPLAY_CMD_DISPLAY_CONTROL_BLINK_ON 0x01 +#define DISPLAY_CMD_DISPLAY_CONTROL_BLINK_OFF 0x00 + #define DISPLAY_LINE1_FIRST_CHAR_ADDR 0 #define DISPLAY_LINE2_FIRST_CHAR_ADDR 64 #define DISPLAY_LINE3_FIRST_CHAR_ADDR 20 @@ -87,47 +94,41 @@ void display_i2c_init(void) { HAL_Delay(50); - display_i2c_send_cmd(DISPLAY_CMD_FUNCTION_SET | - DISPLAY_CMD_FUNCTION_SET_8BITS); + display_i2c_send_cmd(DISPLAY_INIT_SET_8BIT); HAL_Delay(5); - display_i2c_send_cmd(DISPLAY_CMD_FUNCTION_SET | - DISPLAY_CMD_FUNCTION_SET_8BITS); - HAL_Delay(2); + display_i2c_send_cmd(DISPLAY_INIT_SET_8BIT); + HAL_Delay(1); - display_i2c_send_cmd(DISPLAY_CMD_FUNCTION_SET | - DISPLAY_CMD_FUNCTION_SET_8BITS); - HAL_Delay(2); + display_i2c_send_cmd(DISPLAY_INIT_SET_8BIT); + HAL_Delay(1); - display_i2c_send_cmd(DISPLAY_CMD_FUNCTION_SET | - DISPLAY_CMD_FUNCTION_SET_4BITS); - HAL_Delay(2); + display_i2c_send_cmd(DISPLAY_INIT_SET_4BIT); + HAL_Delay(1); display_i2c_send_cmd(DISPLAY_CMD_FUNCTION_SET | DISPLAY_CMD_FUNCTION_SET_4BITS | DISPLAY_CMD_FUNCTION_SET_2LINES | DISPLAY_CMD_FUNCTION_SET_5x8DOTS); - HAL_Delay(2); + HAL_Delay(1); display_i2c_send_cmd(DISPLAY_CMD_DISPLAY_CONTROL | - DISPLAY_CMD_DISPLAY_CONTROL_DISPLAY_OFF | - DISPLAY_CMD_DISPLAY_CONTROL_CURSOR_OFF | - DISPLAY_CMD_DISPLAY_CONTROL_BLINK_OFF); - HAL_Delay(2); + DISPLAY_CMD_DISPLAY_CONTROL_DISPLAY_OFF); + HAL_Delay(1); display_i2c_send_cmd(DISPLAY_CMD_CLEAR_DISPLAY); - HAL_Delay(2); + HAL_Delay(1); display_i2c_send_cmd(DISPLAY_CMD_ENTRY_MODE_SET | DISPLAY_CMD_ENTRY_MODE_SET_INCREMENT_CURSOR | DISPLAY_CMD_ENTRY_MODE_SET_NO_SHIFT); - HAL_Delay(2); + HAL_Delay(1); display_i2c_send_cmd(DISPLAY_CMD_DISPLAY_CONTROL | DISPLAY_CMD_DISPLAY_CONTROL_DISPLAY_ON | DISPLAY_CMD_DISPLAY_CONTROL_CURSOR_OFF | DISPLAY_CMD_DISPLAY_CONTROL_BLINK_OFF); - HAL_Delay(2); + HAL_Delay(1); b_display_i2c_dma_done = true; g_display_i2c_tick = DISPLAY_TICK_CNT_INI_MS; @@ -238,6 +239,7 @@ void display_i2c_async_tick(void) } display_i2c_async_write(curr_tx_data); + } } }