1 1
/*
2 -
* SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
2 +
* SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
3 3
*
4 4
* SPDX-License-Identifier: Apache-2.0
5 5
*/
@@ -52,7 +52,9 @@ typedef struct {
52 52
int lcd_cmd_bits; // Bit width of LCD command
53 53
int lcd_param_bits; // Bit width of LCD parameter
54 54
struct {
55 -
unsigned int dc_data_level: 1; // Indicates the level of DC line when tranfering data
55 +
unsigned int dc_cmd_level: 1; // Indicates the level of DC line when transferring command
56 +
unsigned int dc_data_level: 1; // Indicates the level of DC line when transferring color data
57 +
unsigned int dc_param_level: 1; // Indicates the level of DC line when transferring parameters
56 58
unsigned int octal_mode: 1; // Indicates whether the transmitting is enabled with octal mode (8 data lines)
57 59
unsigned int quad_mode: 1; // Indicates whether the transmitting is enabled with quad mode (4 data lines)
58 60
} flags;
@@ -94,7 +96,9 @@ esp_err_t esp_lcd_new_panel_io_spi(esp_lcd_spi_bus_handle_t bus, const esp_lcd_p
94 96
ESP_GOTO_ON_ERROR(gpio_config(&io_conf), err, TAG, "configure GPIO for D/C line failed");
95 97
}
96 98 99 +
spi_panel_io->flags.dc_cmd_level = io_config->flags.dc_high_on_cmd;
97 100
spi_panel_io->flags.dc_data_level = !io_config->flags.dc_low_on_data;
101 +
spi_panel_io->flags.dc_param_level = !io_config->flags.dc_low_on_param;
98 102
spi_panel_io->flags.octal_mode = io_config->flags.octal_mode;
99 103
spi_panel_io->flags.quad_mode = io_config->flags.quad_mode;
100 104
spi_panel_io->on_color_trans_done = io_config->on_color_trans_done;
@@ -225,7 +229,7 @@ static esp_err_t panel_io_spi_tx_param(esp_lcd_panel_io_t *io, int lcd_cmd, cons
225 229 226 230
if (send_cmd) {
227 231
spi_lcd_prepare_cmd_buffer(spi_panel_io, &lcd_cmd);
228 -
lcd_trans->flags.dc_gpio_level = !spi_panel_io->flags.dc_data_level; // set D/C line to command mode
232 +
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_cmd_level; // set D/C level in command phase
229 233
lcd_trans->base.length = spi_panel_io->lcd_cmd_bits;
230 234
lcd_trans->base.tx_buffer = &lcd_cmd;
231 235
// command is short, using polling mode
@@ -235,7 +239,7 @@ static esp_err_t panel_io_spi_tx_param(esp_lcd_panel_io_t *io, int lcd_cmd, cons
235 239 236 240
if (param && param_size) {
237 241
spi_lcd_prepare_param_buffer(spi_panel_io, param, param_size);
238 -
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_data_level; // set D/C line to data mode
242 +
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_param_level; // set D/C level in param phase
239 243
lcd_trans->base.length = param_size * 8; // transaction length is in bits
240 244
lcd_trans->base.tx_buffer = param;
241 245
lcd_trans->base.flags &= ~SPI_TRANS_CS_KEEP_ACTIVE;
@@ -279,7 +283,7 @@ static esp_err_t panel_io_spi_rx_param(esp_lcd_panel_io_t *io, int lcd_cmd, void
279 283 280 284
if (send_cmd) {
281 285
spi_lcd_prepare_cmd_buffer(spi_panel_io, &lcd_cmd);
282 -
lcd_trans->flags.dc_gpio_level = !spi_panel_io->flags.dc_data_level; // set D/C line to command mode
286 +
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_cmd_level; // set D/C level in command phase
283 287
lcd_trans->base.length = spi_panel_io->lcd_cmd_bits;
284 288
lcd_trans->base.tx_buffer = &lcd_cmd;
285 289
// command is short, using polling mode
@@ -288,7 +292,7 @@ static esp_err_t panel_io_spi_rx_param(esp_lcd_panel_io_t *io, int lcd_cmd, void
288 292
}
289 293 290 294
if (param && param_size) {
291 -
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_data_level; // set D/C line to data mode
295 +
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_param_level; // set D/C level in param phase
292 296
lcd_trans->base.length = 0;
293 297
lcd_trans->base.tx_buffer = NULL;
294 298
lcd_trans->base.rxlength = param_size * 8; // Read length in bits
@@ -328,7 +332,7 @@ static esp_err_t panel_io_spi_tx_color(esp_lcd_panel_io_t *io, int lcd_cmd, cons
328 332 329 333
spi_lcd_prepare_cmd_buffer(spi_panel_io, &lcd_cmd);
330 334
lcd_trans->base.user = spi_panel_io;
331 -
lcd_trans->flags.dc_gpio_level = !spi_panel_io->flags.dc_data_level; // set D/C line to command mode
335 +
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_cmd_level; // set D/C level in command phase
332 336
lcd_trans->base.length = spi_panel_io->lcd_cmd_bits;
333 337
lcd_trans->base.tx_buffer = &lcd_cmd;
334 338
if(color && color_size) {
@@ -371,7 +375,7 @@ static esp_err_t panel_io_spi_tx_color(esp_lcd_panel_io_t *io, int lcd_cmd, cons
371 375
}
372 376 373 377
lcd_trans->base.user = spi_panel_io;
374 -
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_data_level; // set D/C line to data mode
378 +
lcd_trans->flags.dc_gpio_level = spi_panel_io->flags.dc_data_level; // set D/C level in data phase
375 379
lcd_trans->base.length = chunk_size * 8; // transaction length is in bits
376 380
lcd_trans->base.tx_buffer = color;
377 381
if (spi_panel_io->flags.octal_mode) {
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