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drivers/ili9341 : Update documentation

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This commit is contained in:
Akshai M 2020-12-02 15:56:32 +01:00
parent 64ddd8384e
commit d65a4b3f97
1 changed files with 10 additions and 3 deletions
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13
drivers/include/ili9341.h
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@ -52,7 +52,8 @@ extern "C" {
/** /**
* @brief ILI9341 gvdd level. * @brief ILI9341 gvdd level.
* *
* Default GVDD voltage of 4.8V * Default GVDD voltage of 4.8V. GVDD is reference level for the VCOM level and
* the grayscale voltage level. GVDD should be ≦ (AVDD - 0.5) V .
*/ */
#ifndef CONFIG_ILI9341_GVDD #ifndef CONFIG_ILI9341_GVDD
#define CONFIG_ILI9341_GVDD 4800 #define CONFIG_ILI9341_GVDD 4800
@ -61,7 +62,10 @@ extern "C" {
/** /**
* @brief ILI9341 VCOMH voltage level. * @brief ILI9341 VCOMH voltage level.
* *
* Default VCOMH voltage of 4.25V * Default VCOMH voltage of 4.25V. VCOMH represents the high level of VCOM AC
* voltage. VCOM levels needs to be adjusted to match the capacitance and
* performance specifications of the TFT panel to maximize contrast and minimize
* flickering.
*/ */
#ifndef CONFIG_ILI9341_VCOMH #ifndef CONFIG_ILI9341_VCOMH
#define CONFIG_ILI9341_VCOMH 4250 #define CONFIG_ILI9341_VCOMH 4250
@ -70,7 +74,10 @@ extern "C" {
/** /**
* @brief ILI9341 VCOML voltage level. * @brief ILI9341 VCOML voltage level.
* *
* Default VCOMH voltage of -2V * Default VCOML voltage of -2V. VCOML represents the low level of VCOM AC
* voltage. VCOM levels needs to be adjusted to match the capacitance and
* performance specifications of the TFT panel to maximize contrast and minimize
* flickering
*/ */
#ifndef CONFIG_ILI9341_VCOML #ifndef CONFIG_ILI9341_VCOML
#define CONFIG_ILI9341_VCOML -2000 #define CONFIG_ILI9341_VCOML -2000