diff options
| -rw-r--r-- | ESP32-HUB75-MatrixPanel-I2S-DMA.cpp | 39 | ||||
| -rw-r--r-- | ESP32-HUB75-MatrixPanel-I2S-DMA.h | 2 |
2 files changed, 37 insertions, 4 deletions
diff --git a/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp b/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp index 0347ad7..603b1ec 100644 --- a/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp +++ b/ESP32-HUB75-MatrixPanel-I2S-DMA.cpp @@ -603,7 +603,7 @@ void MatrixPanel_I2S_DMA::clearFrameBuffer(bool _buff_id){ int row_idx = dma_buff.rowBits.size(); do { --row_idx; - + ESP32_I2S_DMA_STORAGE_TYPE* row = dma_buff.rowBits[row_idx]->getDataPtr(0, _buff_id); // set pointer to the HEAD of a buffer holding data for the entire matrix row ESP32_I2S_DMA_STORAGE_TYPE abcde = (ESP32_I2S_DMA_STORAGE_TYPE)row_idx; @@ -616,7 +616,15 @@ void MatrixPanel_I2S_DMA::clearFrameBuffer(bool _buff_id){ // fill all x_pixels except color_index[0] (LSB) ones, this also clears all color data to 0's black do { --x_pixel; - row[x_pixel] = abcde; + + if ( m_cfg.driver == HUB75_I2S_CFG::SM5266P) { + // modifications here for row shift register type SM5266P + // https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/issues/164 + row[x_pixel] = abcde & (0x18 << BITS_ADDR_OFFSET); // mask out the bottom 3 bits which are the clk di bk inputs + } else { + row[x_pixel] = abcde; + } + } while(x_pixel!=dma_buff.rowBits[row_idx]->width); // color_index[0] (LSB) x_pixels must be "marked" with a previous's row address, 'cause it is used to display @@ -624,8 +632,33 @@ void MatrixPanel_I2S_DMA::clearFrameBuffer(bool _buff_id){ abcde = ((ESP32_I2S_DMA_STORAGE_TYPE)row_idx-1) << BITS_ADDR_OFFSET; do { --x_pixel; - row[x_pixel] = abcde; + + if ( m_cfg.driver == HUB75_I2S_CFG::SM5266P) { + // modifications here for row shift register type SM5266P + // https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/issues/164 + row[x_pixel] = abcde & (0x18 << BITS_ADDR_OFFSET); // mask out the bottom 3 bits which are the clk di bk inputs + } else { + row[x_pixel] = abcde; + } + //row[x_pixel] = abcde; } while(x_pixel); + + + // modifications here for row shift register type SM5266P + // https://github.com/mrfaptastic/ESP32-HUB75-MatrixPanel-I2S-DMA/issues/164 + if ( m_cfg.driver == HUB75_I2S_CFG::SM5266P) { + uint16_t serialCount; + uint16_t latch; + x_pixel = dma_buff.rowBits[row_idx]->width - 16; // come back 8*2 pixels to allow for 8 writes + serialCount = 8; + do{ + serialCount--; + latch = row[x_pixel] | (((((ESP32_I2S_DMA_STORAGE_TYPE)row_idx) % 8) == serialCount) << 1) << BITS_ADDR_OFFSET; // data on 'B' + row[x_pixel++] = latch| (0x05<< BITS_ADDR_OFFSET); // clock high on 'A'and BK high for update + row[x_pixel++] = latch| (0x04<< BITS_ADDR_OFFSET); // clock low on 'A'and BK high for update + } while (serialCount); + } // end SM5266P + // let's set LAT/OE control bits for specific pixels in each color_index subrows uint8_t coloridx = dma_buff.rowBits[row_idx]->color_depth; diff --git a/ESP32-HUB75-MatrixPanel-I2S-DMA.h b/ESP32-HUB75-MatrixPanel-I2S-DMA.h index a2caeca..6b9e8ea 100644 --- a/ESP32-HUB75-MatrixPanel-I2S-DMA.h +++ b/ESP32-HUB75-MatrixPanel-I2S-DMA.h @@ -229,7 +229,7 @@ struct HUB75_I2S_CFG { * Enumeration of hardware-specific chips * used to drive matrix modules */ - enum shift_driver {SHIFTREG=0, FM6124, FM6126A, ICN2038S, MBI5124}; + enum shift_driver {SHIFTREG=0, FM6124, FM6126A, ICN2038S, MBI5124, SM5266P}; /** * I2S clock speed selector |