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example(spi_master): add menuconfig to enable the auto detect of LCD type.

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This commit is contained in:
michael 2017-08-31 15:03:19 +08:00
parent aad24cb6c7
commit c9f065fd2b
2 changed files with 62 additions and 18 deletions
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4
examples/peripherals/spi_master/main/Kconfig.projbuild
View File

@ -2,10 +2,12 @@ menu "Example Configuration"
choice LCD_TYPE
prompt "LCD module type"
default LCD_TYPE_ST7789V
default LCD_TYPE_AUTO
help
The type of LCD on the evaluation board.
config LCD_TYPE_AUTO
bool "Auto detect"
config LCD_TYPE_ST7789V
bool "ST7789V (WROVER Kit v2 or v3)"
config LCD_TYPE_ILI9341

76
examples/peripherals/spi_master/main/spi_master_example_main.c
View File

@ -50,11 +50,14 @@ typedef struct {
uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
} lcd_init_cmd_t;
typedef enum {
LCD_TYPE_ILI = 1,
LCD_TYPE_ST,
LCD_TYPE_MAX,
} type_lcd_t;
//Place data into DRAM. Constant data gets placed into DROM by default, which is not accessible by DMA.
#ifdef CONFIG_LCD_TYPE_ST7789V
DRAM_ATTR static const lcd_init_cmd_t lcd_init_cmds[]={
DRAM_ATTR static const lcd_init_cmd_t st_init_cmds[]={
{0x36, {(1<<5)|(1<<6)}, 1},
{0x3A, {0x55}, 1},
{0xB2, {0x0c, 0x0c, 0x00, 0x33, 0x33}, 5},
@ -73,9 +76,7 @@ DRAM_ATTR static const lcd_init_cmd_t lcd_init_cmds[]={
{0, {0}, 0xff}
};
#elif defined(CONFIG_LCD_TYPE_ILI9341)
DRAM_ATTR static const lcd_init_cmd_t lcd_init_cmds[]={
DRAM_ATTR static const lcd_init_cmd_t ili_init_cmds[]={
{0xCF, {0x00, 0x83, 0X30}, 3},
{0xED, {0x64, 0x03, 0X12, 0X81}, 4},
{0xE8, {0x85, 0x01, 0x79}, 3},
@ -103,9 +104,6 @@ DRAM_ATTR static const lcd_init_cmd_t lcd_init_cmds[]={
{0, {0}, 0xff},
};
#endif
//Send a command to the LCD. Uses spi_device_transmit, which waits until the transfer is complete.
void lcd_cmd(spi_device_handle_t spi, const uint8_t cmd)
{
@ -141,10 +139,29 @@ void lcd_spi_pre_transfer_callback(spi_transaction_t *t)
gpio_set_level(PIN_NUM_DC, dc);
}
uint32_t lcd_get_id(spi_device_handle_t spi)
{
//get_id cmd
lcd_cmd( spi, 0x04);
spi_transaction_t t;
memset(&t, 0, sizeof(t));
t.length=8*3;
t.flags = SPI_TRANS_USE_RXDATA;
t.user = (void*)1;
esp_err_t ret = spi_device_transmit(spi, &t);
assert( ret == ESP_OK );
return *(uint32_t*)t.rx_data;
}
//Initialize the display
void lcd_init(spi_device_handle_t spi)
{
int cmd=0;
const lcd_init_cmd_t* lcd_init_cmds;
//Initialize non-SPI GPIOs
gpio_set_direction(PIN_NUM_DC, GPIO_MODE_OUTPUT);
gpio_set_direction(PIN_NUM_RST, GPIO_MODE_OUTPUT);
@ -156,14 +173,40 @@ void lcd_init(spi_device_handle_t spi)
gpio_set_level(PIN_NUM_RST, 1);
vTaskDelay(100 / portTICK_RATE_MS);
//Send all the commands
//detect LCD type
uint32_t lcd_id = lcd_get_id(spi);
int lcd_detected_type = 0;
int lcd_type;
#ifdef CONFIG_LCD_TYPE_ST7789V
printf("LCD ST7789V initialization.\n");
#elif defined( CONFIG_LCD_TYPE_ILI9341)
printf("LCD ILI9341 initialization.\n");
printf("LCD ID: %08X\n", lcd_id);
if ( lcd_id == 0 ) {
//zero, ili
lcd_detected_type = LCD_TYPE_ILI;
printf("ILI9341 detected...\n");
} else {
// none-zero, ST
lcd_detected_type = LCD_TYPE_ST;
printf("ST7789V detected...\n");
}
#ifdef CONFIG_LCD_TYPE_AUTO
lcd_type = lcd_detected_type;
#elif defined( CONFIG_LCD_TYPE_ST7789V )
printf("kconfig: force CONFIG_LCD_TYPE_ST7789V.\n");
lcd_type = LCD_TYPE_ST;
#elif defined( CONFIG_LCD_TYPE_ILI9341 )
printf("kconfig: force CONFIG_LCD_TYPE_ILI9341.\n");
lcd_type = LCD_TYPE_ILI;
#endif
if ( lcd_type == LCD_TYPE_ST ) {
printf("LCD ST7789V initialization.\n");
lcd_init_cmds = st_init_cmds;
} else {
printf("LCD ILI9341 initialization.\n");
lcd_init_cmds = ili_init_cmds;
}
//Send all the commands
while (lcd_init_cmds[cmd].databytes!=0xff) {
lcd_cmd(spi, lcd_init_cmds[cmd].cmd);
lcd_data(spi, lcd_init_cmds[cmd].data, lcd_init_cmds[cmd].databytes&0x1F);
@ -278,7 +321,6 @@ static void display_pretty_colors(spi_device_handle_t spi)
}
}
void app_main()
{
esp_err_t ret;
@ -291,7 +333,7 @@ void app_main()
.quadhd_io_num=-1
};
spi_device_interface_config_t devcfg={
.clock_speed_hz=10000000, //Clock out at 10 MHz
.clock_speed_hz=10*1000*1000, //Clock out at 10 MHz
.mode=0, //SPI mode 0
.spics_io_num=PIN_NUM_CS, //CS pin
.queue_size=7, //We want to be able to queue 7 transactions at a time