ScStw/ESP32-HUB75-MatrixPanel-DMA
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Update ESP32-HUB75-MatrixPanel-I2S-DMA.h

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mrfaptastic 2021-08-19 20:44:07 +01:00
parent aa0c7785b2
commit a2d3efc0f3
1 changed files with 5 additions and 4 deletions
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ESP32-HUB75-MatrixPanel-I2S-DMA.h
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@ -496,17 +496,18 @@ class MatrixPanel_I2S_DMA {
{ {
if ( !m_cfg.double_buff) return; if ( !m_cfg.double_buff) return;
// Flip to other buffer as the backbuffer. i.e. Graphic changes happen to this buffer (but aren't displayed until showDMABuffer())
back_buffer_id ^= 1;
#if SERIAL_DEBUG #if SERIAL_DEBUG
Serial.printf_P(PSTR("Set back buffer to: %d\n"), back_buffer_id); Serial.printf_P(PSTR("Set back buffer to: %d\n"), back_buffer_id);
#endif #endif
i2s_parallel_flip_to_buffer(I2S_NUM_0, back_buffer_id); i2s_parallel_flip_to_buffer(I2S_NUM_0, back_buffer_id);
// Wait before we allow any writing to the buffer. Stop flicker. // Wait before we allow any writing to the buffer. Stop flicker.
while(i2s_parallel_is_previous_buffer_free() == false) { } while(i2s_parallel_is_previous_buffer_free() == false) { }
// Flip to other buffer as the backbuffer. i.e. Graphic changes happen to this buffer (but aren't displayed until showDMABuffer())
back_buffer_id ^= 1;
} }
inline void setPanelBrightness(int b) inline void setPanelBrightness(int b)