drivers: display: ili9340: improve error handling
Add error handling to multiple areas of the code and improve log messages. Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
This commit is contained in:
Gerard Marull-Paretas
Maureen Helm
parent
26c3b99b55
commit
2d4ec8fca9
4 changed files with 227 additions and 67 deletions
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@ -53,10 +53,18 @@ struct ili9340_data {
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#define ILI9340_RGB_SIZE 3U
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#endif
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static void ili9340_exit_sleep(const struct device *dev)
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static int ili9340_exit_sleep(const struct device *dev)
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{
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ili9340_transmit(dev, ILI9340_CMD_EXIT_SLEEP, NULL, 0);
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int r;
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r = ili9340_transmit(dev, ILI9340_CMD_EXIT_SLEEP, NULL, 0);
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if (r < 0) {
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return r;
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}
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k_sleep(K_MSEC(120));
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return 0;
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}
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static int ili9340_init(const struct device *dev)
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@ -64,12 +72,14 @@ static int ili9340_init(const struct device *dev)
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const struct ili9340_config *config = (struct ili9340_config *)dev->config;
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struct ili9340_data *data = (struct ili9340_data *)dev->data;
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int r;
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LOG_DBG("Initializing display driver");
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data->spi_dev = device_get_binding(config->spi_name);
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if (data->spi_dev == NULL) {
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LOG_ERR("Could not get SPI device for ILI9340");
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return -EPERM;
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LOG_ERR("Could not get SPI device %s", config->spi_name);
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return -ENODEV;
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}
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data->spi_config.frequency = config->spi_max_freq;
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@ -86,18 +96,26 @@ static int ili9340_init(const struct device *dev)
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data->reset_gpio = device_get_binding(config->reset_label);
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if (data->reset_gpio) {
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gpio_pin_configure(data->reset_gpio, config->reset_pin,
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r = gpio_pin_configure(data->reset_gpio, config->reset_pin,
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GPIO_OUTPUT_INACTIVE | config->reset_flags);
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if (r < 0) {
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LOG_ERR("Could not configure reset GPIO (%d)", r);
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return r;
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}
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}
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data->command_data_gpio = device_get_binding(config->cmd_data_label);
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if (data->command_data_gpio == NULL) {
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LOG_ERR("Could not get GPIO port for ILI9340 command/data");
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return -EPERM;
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LOG_ERR("Could not get command/data GPIO port %s", config->cmd_data_label);
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return -ENODEV;
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}
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gpio_pin_configure(data->command_data_gpio, config->cmd_data_pin,
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r = gpio_pin_configure(data->command_data_gpio, config->cmd_data_pin,
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GPIO_OUTPUT | config->cmd_data_flags);
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if (r < 0) {
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LOG_ERR("Could not configure command/data GPIO (%d)", r);
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return r;
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}
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if (data->reset_gpio) {
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LOG_DBG("Resetting display driver");
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@ -109,26 +127,43 @@ static int ili9340_init(const struct device *dev)
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}
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LOG_DBG("Initializing LCD");
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ili9340_lcd_init(dev);
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r = ili9340_lcd_init(dev);
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if (r < 0) {
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LOG_ERR("Could not initialize LCD (%d)", r);
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return r;
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}
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LOG_DBG("Exiting sleep mode");
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ili9340_exit_sleep(dev);
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r = ili9340_exit_sleep(dev);
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if (r < 0) {
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LOG_ERR("Could not exit sleep mode (%d)", r);
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return r;
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}
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return 0;
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}
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static void ili9340_set_mem_area(const struct device *dev, const uint16_t x,
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static int ili9340_set_mem_area(const struct device *dev, const uint16_t x,
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const uint16_t y, const uint16_t w, const uint16_t h)
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{
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int r;
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uint16_t spi_data[2];
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spi_data[0] = sys_cpu_to_be16(x);
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spi_data[1] = sys_cpu_to_be16(x + w - 1);
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ili9340_transmit(dev, ILI9340_CMD_COLUMN_ADDR, &spi_data[0], 4);
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r = ili9340_transmit(dev, ILI9340_CMD_COLUMN_ADDR, &spi_data[0], 4);
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if (r < 0) {
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return r;
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}
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spi_data[0] = sys_cpu_to_be16(y);
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spi_data[1] = sys_cpu_to_be16(y + h - 1);
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ili9340_transmit(dev, ILI9340_CMD_PAGE_ADDR, &spi_data[0], 4);
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r = ili9340_transmit(dev, ILI9340_CMD_PAGE_ADDR, &spi_data[0], 4);
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if (r < 0) {
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return r;
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}
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return 0;
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}
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static int ili9340_write(const struct device *dev, const uint16_t x,
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@ -137,6 +172,8 @@ static int ili9340_write(const struct device *dev, const uint16_t x,
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const void *buf)
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{
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struct ili9340_data *data = (struct ili9340_data *)dev->data;
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int r;
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const uint8_t *write_data_start = (uint8_t *) buf;
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struct spi_buf tx_buf;
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struct spi_buf_set tx_bufs;
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@ -150,7 +187,10 @@ static int ili9340_write(const struct device *dev, const uint16_t x,
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LOG_DBG("Writing %dx%d (w,h) @ %dx%d (x,y)", desc->width, desc->height,
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x, y);
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ili9340_set_mem_area(dev, x, y, desc->width, desc->height);
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r = ili9340_set_mem_area(dev, x, y, desc->width, desc->height);
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if (r < 0) {
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return r;
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}
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if (desc->pitch > desc->width) {
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write_h = 1U;
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@ -160,9 +200,12 @@ static int ili9340_write(const struct device *dev, const uint16_t x,
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nbr_of_writes = 1U;
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}
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ili9340_transmit(dev, ILI9340_CMD_MEM_WRITE,
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r = ili9340_transmit(dev, ILI9340_CMD_MEM_WRITE,
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(void *) write_data_start,
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desc->width * ILI9340_RGB_SIZE * write_h);
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if (r < 0) {
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return r;
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}
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tx_bufs.buffers = &tx_buf;
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tx_bufs.count = 1;
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@ -171,7 +214,12 @@ static int ili9340_write(const struct device *dev, const uint16_t x,
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for (write_cnt = 1U; write_cnt < nbr_of_writes; ++write_cnt) {
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tx_buf.buf = (void *)write_data_start;
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tx_buf.len = desc->width * ILI9340_RGB_SIZE * write_h;
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spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
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r = spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
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if (r < 0) {
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return r;
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}
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write_data_start += (desc->pitch * ILI9340_RGB_SIZE);
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}
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@ -196,15 +244,13 @@ static void *ili9340_get_framebuffer(const struct device *dev)
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static int ili9340_display_blanking_off(const struct device *dev)
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{
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LOG_DBG("Turning display blanking off");
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ili9340_transmit(dev, ILI9340_CMD_DISPLAY_ON, NULL, 0);
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return 0;
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return ili9340_transmit(dev, ILI9340_CMD_DISPLAY_ON, NULL, 0);
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}
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static int ili9340_display_blanking_on(const struct device *dev)
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{
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LOG_DBG("Turning display blanking on");
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ili9340_transmit(dev, ILI9340_CMD_DISPLAY_OFF, NULL, 0);
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return 0;
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return ili9340_transmit(dev, ILI9340_CMD_DISPLAY_OFF, NULL, 0);
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}
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static int ili9340_set_brightness(const struct device *dev,
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@ -261,28 +307,37 @@ static void ili9340_get_capabilities(const struct device *dev,
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capabilities->current_orientation = DISPLAY_ORIENTATION_NORMAL;
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}
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void ili9340_transmit(const struct device *dev, uint8_t cmd, void *tx_data,
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int ili9340_transmit(const struct device *dev, uint8_t cmd, void *tx_data,
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size_t tx_len)
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{
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const struct ili9340_config *config = (struct ili9340_config *)dev->config;
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struct ili9340_data *data = (struct ili9340_data *)dev->data;
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int r;
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struct spi_buf tx_buf = { .buf = &cmd, .len = 1 };
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struct spi_buf_set tx_bufs = { .buffers = &tx_buf, .count = 1 };
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gpio_pin_set(data->command_data_gpio, config->cmd_data_pin,
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ILI9340_CMD_DATA_PIN_COMMAND);
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spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
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r = spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
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if (r < 0) {
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return r;
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}
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if (tx_data != NULL) {
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tx_buf.buf = tx_data;
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tx_buf.len = tx_len;
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gpio_pin_set(data->command_data_gpio, config->cmd_data_pin,
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ILI9340_CMD_DATA_PIN_DATA);
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spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
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r = spi_write(data->spi_dev, &data->spi_config, &tx_bufs);
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if (r < 0) {
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return r;
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}
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}
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return 0;
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}
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static const struct display_driver_api ili9340_api = {
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.blanking_on = ili9340_display_blanking_on,
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.blanking_off = ili9340_display_blanking_off,
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@ -60,15 +60,18 @@
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* In case no data should be transmitted pass a NULL pointer
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* @param tx_len Number of bytes in tx_data buffer
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*
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* @return 0 on success, errno otherwise.
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*/
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void ili9340_transmit(const struct device *dev, uint8_t cmd, void *tx_data,
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int ili9340_transmit(const struct device *dev, uint8_t cmd, void *tx_data,
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size_t tx_len);
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/**
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* Perform LCD specific initialization
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*
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* @param data Device data structure
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*
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* @return 0 on success, errno otherwise.
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*/
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void ili9340_lcd_init(const struct device *dev);
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int ili9340_lcd_init(const struct device *dev);
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#endif /* ZEPHYR_DRIVERS_DISPLAY_DISPLAY_ILI9340_H_ */
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@ -6,26 +6,42 @@
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#include "display_ili9340.h"
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void ili9340_lcd_init(const struct device *dev)
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int ili9340_lcd_init(const struct device *dev)
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{
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int r;
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uint8_t tx_data[15];
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tx_data[0] = 0x23;
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ili9340_transmit(dev, ILI9340_CMD_POWER_CTRL_1, tx_data, 1);
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r = ili9340_transmit(dev, ILI9340_CMD_POWER_CTRL_1, tx_data, 1);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x10;
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ili9340_transmit(dev, ILI9340_CMD_POWER_CTRL_2, tx_data, 1);
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r = ili9340_transmit(dev, ILI9340_CMD_POWER_CTRL_2, tx_data, 1);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x3e;
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tx_data[1] = 0x28;
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ili9340_transmit(dev, ILI9340_CMD_VCOM_CTRL_1, tx_data, 2);
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r = ili9340_transmit(dev, ILI9340_CMD_VCOM_CTRL_1, tx_data, 2);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x86;
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ili9340_transmit(dev, ILI9340_CMD_VCOM_CTRL_2, tx_data, 1);
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r = ili9340_transmit(dev, ILI9340_CMD_VCOM_CTRL_2, tx_data, 1);
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if (r < 0) {
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return r;
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}
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tx_data[0] =
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ILI9340_DATA_MEM_ACCESS_CTRL_MV | ILI9340_DATA_MEM_ACCESS_CTRL_BGR;
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ili9340_transmit(dev, ILI9340_CMD_MEM_ACCESS_CTRL, tx_data, 1);
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r = ili9340_transmit(dev, ILI9340_CMD_MEM_ACCESS_CTRL, tx_data, 1);
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if (r < 0) {
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return r;
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}
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#ifdef CONFIG_ILI9340_RGB565
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tx_data[0] = ILI9340_DATA_PIXEL_FORMAT_MCU_16_BIT |
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@ -34,19 +50,31 @@ void ili9340_lcd_init(const struct device *dev)
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tx_data[0] = ILI9340_DATA_PIXEL_FORMAT_MCU_18_BIT |
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ILI9340_DATA_PIXEL_FORMAT_RGB_18_BIT;
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#endif
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ili9340_transmit(dev, ILI9340_CMD_PIXEL_FORMAT_SET, tx_data, 1);
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r = ili9340_transmit(dev, ILI9340_CMD_PIXEL_FORMAT_SET, tx_data, 1);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x00;
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tx_data[1] = 0x18;
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ili9340_transmit(dev, ILI9340_CMD_FRAME_CTRL_NORMAL_MODE, tx_data, 2);
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r = ili9340_transmit(dev, ILI9340_CMD_FRAME_CTRL_NORMAL_MODE, tx_data, 2);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x08;
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tx_data[1] = 0x82;
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tx_data[2] = 0x27;
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ili9340_transmit(dev, ILI9340_CMD_DISPLAY_FUNCTION_CTRL, tx_data, 3);
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r = ili9340_transmit(dev, ILI9340_CMD_DISPLAY_FUNCTION_CTRL, tx_data, 3);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x01;
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ili9340_transmit(dev, ILI9340_CMD_GAMMA_SET, tx_data, 1);
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r = ili9340_transmit(dev, ILI9340_CMD_GAMMA_SET, tx_data, 1);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x0F;
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tx_data[1] = 0x31;
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@ -63,8 +91,11 @@ void ili9340_lcd_init(const struct device *dev)
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tx_data[12] = 0x0E;
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tx_data[13] = 0x09;
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tx_data[14] = 0x00;
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ili9340_transmit(dev, ILI9340_CMD_POSITIVE_GAMMA_CORRECTION, tx_data,
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r = ili9340_transmit(dev, ILI9340_CMD_POSITIVE_GAMMA_CORRECTION, tx_data,
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15);
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if (r < 0) {
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return r;
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}
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tx_data[0] = 0x00;
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tx_data[1] = 0x0E;
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@ -81,6 +112,11 @@ void ili9340_lcd_init(const struct device *dev)
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tx_data[12] = 0x31;
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tx_data[13] = 0x36;
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tx_data[14] = 0x0F;
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ili9340_transmit(dev, ILI9340_CMD_NEGATIVE_GAMMA_CORRECTION, tx_data,
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r = ili9340_transmit(dev, ILI9340_CMD_NEGATIVE_GAMMA_CORRECTION, tx_data,
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15);
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if (r < 0) {
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return r;
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}
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return 0;
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}
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@ -13,14 +13,18 @@
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* https://github.com/Seeed-Studio/TFT_Touch_Shield_V2
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*/
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void ili9340_lcd_init(const struct device *dev)
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int ili9340_lcd_init(const struct device *dev)
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{
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int r;
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uint8_t cmd;
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uint8_t data[15];
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/* Software reset */
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cmd = ILI9340_CMD_SOFTWARE_RESET;
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ili9340_transmit(dev, cmd, NULL, 0);
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r = ili9340_transmit(dev, cmd, NULL, 0);
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if (r < 0) {
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return r;
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}
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k_sleep(K_MSEC(5));
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@ -28,20 +32,29 @@ void ili9340_lcd_init(const struct device *dev)
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data[0] = 0x00U;
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data[1] = 0x8BU;
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data[2] = 0x30U;
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ili9340_transmit(dev, cmd, data, 3);
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r = ili9340_transmit(dev, cmd, data, 3);
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if (r < 0) {
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return r;
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}
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cmd = ILI9341_CMD_POWER_ON_SEQ_CTRL;
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data[0] = 0x67U;
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data[1] = 0x03U;
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data[2] = 0x12U;
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data[3] = 0x81U;
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ili9340_transmit(dev, cmd, data, 4);
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r = ili9340_transmit(dev, cmd, data, 4);
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if (r < 0) {
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return r;
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}
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cmd = ILI9341_CMD_DRVR_TIMING_CTRL_A_I;
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data[0] = 0x85U;
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data[1] = 0x10U;
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data[2] = 0x7AU;
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ili9340_transmit(dev, cmd, data, 3);
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r = ili9340_transmit(dev, cmd, data, 3);
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if (r < 0) {
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return r;
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}
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cmd = ILI9341_CMD_POWER_CTRL_A;
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||||
data[0] = 0x39U;
|
||||
|
|
@ -49,39 +62,60 @@ void ili9340_lcd_init(const struct device *dev)
|
|||
data[2] = 0x00U;
|
||||
data[3] = 0x34U;
|
||||
data[4] = 0x02U;
|
||||
ili9340_transmit(dev, cmd, data, 5);
|
||||
r = ili9340_transmit(dev, cmd, data, 5);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
cmd = ILI9341_CMD_PUMP_RATIO_CTRL;
|
||||
data[0] = 0x20U;
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
cmd = ILI9341_CMD_DRVR_TIMING_CTRL_B;
|
||||
data[0] = 0x00U;
|
||||
data[1] = 0x00U;
|
||||
ili9340_transmit(dev, cmd, data, 2);
|
||||
r = ili9340_transmit(dev, cmd, data, 2);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Power control */
|
||||
/* VRH[5:0] */
|
||||
cmd = ILI9340_CMD_POWER_CTRL_1;
|
||||
data[0] = 0x1BU;
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Power control */
|
||||
/* SAP[2:0];BT[3:0] */
|
||||
cmd = ILI9340_CMD_POWER_CTRL_2;
|
||||
data[0] = 0x10U;
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* VCM control */
|
||||
cmd = ILI9340_CMD_VCOM_CTRL_1;
|
||||
data[0] = 0x3FU;
|
||||
data[1] = 0x3CU;
|
||||
ili9340_transmit(dev, cmd, data, 2);
|
||||
r = ili9340_transmit(dev, cmd, data, 2);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* VCM control2 */
|
||||
cmd = ILI9340_CMD_VCOM_CTRL_2;
|
||||
data[0] = 0xB7U;
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Memory Access Control */
|
||||
cmd = ILI9340_CMD_MEM_ACCESS_CTRL;
|
||||
|
|
@ -89,7 +123,10 @@ void ili9340_lcd_init(const struct device *dev)
|
|||
ILI9340_DATA_MEM_ACCESS_CTRL_MV |
|
||||
ILI9340_DATA_MEM_ACCESS_CTRL_ML |
|
||||
ILI9340_DATA_MEM_ACCESS_CTRL_BGR;
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Pixel Format Set */
|
||||
cmd = ILI9340_CMD_PIXEL_FORMAT_SET;
|
||||
|
|
@ -100,29 +137,44 @@ void ili9340_lcd_init(const struct device *dev)
|
|||
data[0] = ILI9340_DATA_PIXEL_FORMAT_MCU_18_BIT |
|
||||
ILI9340_DATA_PIXEL_FORMAT_RGB_18_BIT;
|
||||
#endif
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Frame Rate */
|
||||
cmd = ILI9340_CMD_FRAME_CTRL_NORMAL_MODE;
|
||||
data[0] = 0x00U;
|
||||
data[1] = 0x1BU;
|
||||
ili9340_transmit(dev, cmd, data, 2);
|
||||
r = ili9340_transmit(dev, cmd, data, 2);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Display Function Control */
|
||||
cmd = ILI9340_CMD_DISPLAY_FUNCTION_CTRL;
|
||||
data[0] = 0x0AU;
|
||||
data[1] = 0xA2U;
|
||||
ili9340_transmit(dev, cmd, data, 2);
|
||||
r = ili9340_transmit(dev, cmd, data, 2);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* 3Gamma Function Disable */
|
||||
cmd = ILI9341_CMD_ENABLE_3G;
|
||||
data[0] = 0x00U;
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Gamma curve selected */
|
||||
cmd = ILI9340_CMD_GAMMA_SET;
|
||||
data[0] = 0x01U;
|
||||
ili9340_transmit(dev, cmd, data, 1);
|
||||
r = ili9340_transmit(dev, cmd, data, 1);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Positive Gamma Correction */
|
||||
cmd = ILI9340_CMD_POSITIVE_GAMMA_CORRECTION;
|
||||
|
|
@ -141,7 +193,10 @@ void ili9340_lcd_init(const struct device *dev)
|
|||
data[12] = 0x00U;
|
||||
data[13] = 0x00U;
|
||||
data[14] = 0x00U;
|
||||
ili9340_transmit(dev, cmd, data, 15);
|
||||
r = ili9340_transmit(dev, cmd, data, 15);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Negative Gamma Correction */
|
||||
cmd = ILI9340_CMD_NEGATIVE_GAMMA_CORRECTION;
|
||||
|
|
@ -160,15 +215,26 @@ void ili9340_lcd_init(const struct device *dev)
|
|||
data[12] = 0x3FU;
|
||||
data[13] = 0x3FU;
|
||||
data[14] = 0x0FU;
|
||||
ili9340_transmit(dev, cmd, data, 15);
|
||||
r = ili9340_transmit(dev, cmd, data, 15);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
/* Sleep Out */
|
||||
cmd = ILI9340_CMD_EXIT_SLEEP;
|
||||
ili9340_transmit(dev, cmd, NULL, 0);
|
||||
r = ili9340_transmit(dev, cmd, NULL, 0);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
k_sleep(K_MSEC(120));
|
||||
|
||||
/* Display Off */
|
||||
cmd = ILI9340_CMD_DISPLAY_OFF;
|
||||
ili9340_transmit(dev, cmd, NULL, 0);
|
||||
r = ili9340_transmit(dev, cmd, NULL, 0);
|
||||
if (r < 0) {
|
||||
return r;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue