ScStw/ESP32-HUB75-MatrixPanel-DMA
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Update to include SM5266P

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Attempt to resolve #164
This commit is contained in:
mrfaptastic 2021-08-16 11:01:26 +01:00
parent e6aa0cbd80
commit 11eaf34d91
2 changed files with 37 additions and 4 deletions
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39
ESP32-HUB75-MatrixPanel-I2S-DMA.cpp
View file

@ -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;

2
ESP32-HUB75-MatrixPanel-I2S-DMA.h
View file

@ -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