Added SPI burst mode to spi 8 bit.
Dependents: Bicycl_Computer_NUCLEO-F411RE Bicycl_Computer_NUCLEO-L476RG
Fork of UniGraphic by
Added SPI burst mode to this graphics driver. If whoever wants this rolled in to repository let me know. I replaced _spi.write(); with fastWrite(); and clearRX();
SPI8.cpp
// need to re-create SPI firmware to access SPI handle static SPI_HandleTypeDef SpiHandle; void SPI8::fastWrite(int data) { SpiHandle.Instance = SPI1; // Check if data is transmitted while ((SpiHandle.Instance->SR & SPI_SR_TXE) == 0); SpiHandle.Instance->DR = data; } void SPI8::clearRX( void ) { SpiHandle.Instance = SPI1; //Check if the RX buffer is busy //While busy, keep checking while (SpiHandle.Instance->SR & SPI_SR_BSY){ // Check RX buffer readable while ((SpiHandle.Instance->SR & SPI_SR_RXNE) == 0); int dummy = SpiHandle.Instance->DR; } }
Diff: Inits/SSD1306.cpp
- Revision:
- 17:1dafb896c6f5
- Parent:
- 15:b9483ba842c8
--- a/Inits/SSD1306.cpp Mon Feb 23 23:36:22 2015 +0000 +++ b/Inits/SSD1306.cpp Tue Feb 24 22:30:05 2015 +0000 @@ -134,3 +134,44 @@ wr_cmd16(0x8100|(o&0xFF)); } + +//////////////////////////////////////////////////////////////////// +// functions that overrides the standard ones implemented in LCD.cpp +//////////////////////////////////////////////////////////////////// + + +const uint8_t scroll_speed[8]={3,2,1,6,0,5,4,7}; + +//////////////////////////////////////////////////////////////////// +// functions addon to LCD.cpp +//////////////////////////////////////////////////////////////////// +void SSD1306::horizontal_scroll(int l_r,int s_page,int e_page,int speed){ + wr_cmd8(0x2E); // deactivate scroll before change + if(l_r == 1){ + wr_cmd16(0x2700); // horizontal scroll left + } + else { + wr_cmd16(0x2600); + } + wr_cmd16((s_page & 0x07)<<8 | (scroll_speed[speed & 0x07])); + wr_cmd16((e_page & 0x07)<<8 ); + wr_cmd16(0xFF2F); +} + +void SSD1306::horiz_vert_scroll(int l_r,int s_page,int e_page,int v_off,int speed){ + wr_cmd8(0x2E); // deactivate scroll before change + if(l_r == 1){ + wr_cmd16(0x2A00); // horizontal scroll left + } + else { + wr_cmd16(0x2900); + } + wr_cmd16((s_page & 0x07)<<8 | (scroll_speed[speed & 0x07])); + wr_cmd16((e_page & 0x07)<<8 | (v_off & 0x3F) ); + wr_cmd8(0x2F); + +} + +void SSD1306::end_scroll(){ + wr_cmd8(0x2E); +}