diff options
Diffstat (limited to 'nuttx/configs/stm3210e-eval/src/up_lcd.c')
| -rw-r--r-- | nuttx/configs/stm3210e-eval/src/up_lcd.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/nuttx/configs/stm3210e-eval/src/up_lcd.c b/nuttx/configs/stm3210e-eval/src/up_lcd.c index 784adaa06..42da4864a 100644 --- a/nuttx/configs/stm3210e-eval/src/up_lcd.c +++ b/nuttx/configs/stm3210e-eval/src/up_lcd.c @@ -1169,24 +1169,39 @@ static void stm3210e_pm_notify(struct pm_callback_s *cb , enum pm_state_e pmstat { duty--; } - putreg16((uint16_t)duty, STM32_TIM1_CCR1); + + putreg16((uint16_t)duty, STM32_TIM1_CCR1); #endif } break; case(PM_IDLE): { - /* Entering IDLE mode - Turn display off */ + /* Entering IDLE mode - Reduce LCD light */ #ifdef CONFIG_LCD_PWM - putreg16(0, STM32_TIM1_CCR1); + frac = (g_lcddev.power << 16) / CONFIG_LCD_MAXPOWER; + duty = (g_lcddev.reload * frac) >> 16; + if (duty > 0) + { + duty--; + } + + /* Reduce the LCD light to 50% of the MAXPOWER */ + + duty >>= 1; + putreg16((uint16_t)duty, STM32_TIM1_CCR1); #endif } break; case(PM_STANDBY): { - /* Entering STANDBY mode - Logic for PM_STANDBY goes here */ + /* Entering STANDBY mode - Turn display off */ + +#ifdef CONFIG_LCD_PWM + putreg16(0, STM32_TIM1_CCR1); +#endif } break; |