oled: Use DMA to update screen

Author: NickeZ

external/CMakeLists.txt

@@ -66,6 +66,7 @@ if(CMAKE_CROSSCOMPILING)
     asf4-drivers/hal/src/hal_delay.c
     asf4-drivers/hal/src/hal_timer.c
     asf4-drivers/hal/src/hal_usb_device.c
+    asf4-drivers/hal/src/hal_spi_m_dma.c
     asf4-drivers/hal/src/hal_rand_sync.c
     asf4-drivers/hal/src/hal_flash.c
     asf4-drivers/hal/src/hal_pac.c
@@ -75,6 +76,7 @@ if(CMAKE_CROSSCOMPILING)
     asf4-drivers/hal/src/hal_usart_async.c
     asf4-drivers/hal/utils/src/utils_ringbuffer.c
     asf4-drivers/hpl/gclk/hpl_gclk.c
+    asf4-drivers/hpl/dmac/hpl_dmac.c
     asf4-drivers/hpl/oscctrl/hpl_oscctrl.c
     asf4-drivers/hpl/mclk/hpl_mclk.c
     asf4-drivers/hpl/osc32kctrl/hpl_osc32kctrl.c

external/asf4-drivers/Config/hpl_dmac_config.h

@@ -8,7 +8,7 @@
 // <i> Indicates whether dmac is enabled or not
 // <id> dmac_enable
 #ifndef CONF_DMAC_ENABLE
-#define CONF_DMAC_ENABLE 0
+#define CONF_DMAC_ENABLE 1
 #endif
 
 // <q> Priority Level 0
@@ -105,7 +105,7 @@
 // <e> Channel 0 settings
 // <id> dmac_channel_0_settings
 #ifndef CONF_DMAC_CHANNEL_0_SETTINGS
-#define CONF_DMAC_CHANNEL_0_SETTINGS 0
+#define CONF_DMAC_CHANNEL_0_SETTINGS 1
 #endif
 
 // <q> Channel Run in Standby
@@ -122,7 +122,7 @@
 // <i> Defines the trigger action used for a transfer
 // <id> dmac_trigact_0
 #ifndef CONF_DMAC_TRIGACT_0
-#define CONF_DMAC_TRIGACT_0 0
+#define CONF_DMAC_TRIGACT_0 2
 #endif
 
 // <o> Trigger source
@@ -214,7 +214,7 @@
 // <i> Defines the peripheral trigger which is source of the transfer
 // <id> dmac_trifsrc_0
 #ifndef CONF_DMAC_TRIGSRC_0
-#define CONF_DMAC_TRIGSRC_0 0
+#define CONF_DMAC_TRIGSRC_0 11
 #endif
 
 // <o> Channel Arbitration Level
@@ -277,14 +277,14 @@
 // <i> Defines whether source or destination addresses are using the step size settings
 // <id> dmac_stepsel_0
 #ifndef CONF_DMAC_STEPSEL_0
-#define CONF_DMAC_STEPSEL_0 0
+#define CONF_DMAC_STEPSEL_0 1
 #endif
 
 // <q> Source Address Increment
 // <i> Indicates whether the source address incrementation is enabled or not
 // <id> dmac_srcinc_0
 #ifndef CONF_DMAC_SRCINC_0
-#define CONF_DMAC_SRCINC_0 0
+#define CONF_DMAC_SRCINC_0 1
 #endif
 
 // <q> Destination Address Increment

external/asf4-drivers/Config/hpl_sercom_config.h

@@ -235,6 +235,185 @@
 #define CONF_SERCOM_0_USART_RECEIVE_PULSE_LENGTH 0
 #endif
 #endif
+//
+// Enable configuration of module
+#ifndef CONF_SERCOM_3_SPI_ENABLE
+#define CONF_SERCOM_3_SPI_ENABLE 1
+#endif
+
+//<o> SPI DMA TX Channel <0-32>
+//<i> This defines DMA channel to be used
+//<id> spi_master_dma_tx_channel
+#ifndef CONF_SERCOM_3_SPI_M_DMA_TX_CHANNEL
+#define CONF_SERCOM_3_SPI_M_DMA_TX_CHANNEL 0
+#endif
+
+// <e> SPI RX Channel Enable
+// <id> spi_master_rx_channel
+#ifndef CONF_SERCOM_3_SPI_RX_CHANNEL
+#define CONF_SERCOM_3_SPI_RX_CHANNEL 0
+#endif
+
+//<o> DMA Channel <0-32>
+//<i> This defines DMA channel to be used
+//<id> spi_master_dma_rx_channel
+#ifndef CONF_SERCOM_3_SPI_M_DMA_RX_CHANNEL
+#define CONF_SERCOM_3_SPI_M_DMA_RX_CHANNEL 1
+#endif
+
+// </e>
+
+// Set module in SPI Master mode
+#ifndef CONF_SERCOM_3_SPI_MODE
+#define CONF_SERCOM_3_SPI_MODE 0x03
+#endif
+
+// <h> Basic Configuration
+
+// <q> Receive buffer enable
+// <i> Enable receive buffer to receive data from slave (RXEN)
+// <id> spi_master_rx_enable
+#ifndef CONF_SERCOM_3_SPI_RXEN
+#define CONF_SERCOM_3_SPI_RXEN 0x0
+#endif
+
+// <o> Character Size
+// <i> Bit size for all characters sent over the SPI bus (CHSIZE)
+// <0x0=>8 bits
+// <0x1=>9 bits
+// <id> spi_master_character_size
+#ifndef CONF_SERCOM_3_SPI_CHSIZE
+#define CONF_SERCOM_3_SPI_CHSIZE 0x0
+#endif
+// <o> Baud rate <1-18000000>
+// <i> The SPI data transfer rate
+// <id> spi_master_baud_rate
+#ifndef CONF_SERCOM_3_SPI_BAUD
+#define CONF_SERCOM_3_SPI_BAUD 3000000
+#endif
+
+// </h>
+
+// <e> Advanced Configuration
+// <id> spi_master_advanced
+#ifndef CONF_SERCOM_3_SPI_ADVANCED
+#define CONF_SERCOM_3_SPI_ADVANCED 1
+#endif
+
+// <o> Dummy byte <0x00-0x1ff>
+// <id> spi_master_dummybyte
+// <i> Dummy byte used when reading data from the slave without sending any data
+#ifndef CONF_SERCOM_3_SPI_DUMMYBYTE
+#define CONF_SERCOM_3_SPI_DUMMYBYTE 0x1ff
+#endif
+
+// <o> Data Order
+// <0=>MSB first
+// <1=>LSB first
+// <i> I least significant or most significant bit is shifted out first (DORD)
+// <id> spi_master_arch_dord
+#ifndef CONF_SERCOM_3_SPI_DORD
+#define CONF_SERCOM_3_SPI_DORD 0x0
+#endif
+
+// <o> Clock Polarity
+// <0=>SCK is low when idle
+// <1=>SCK is high when idle
+// <i> Determines if the leading edge is rising or falling with a corresponding opposite edge at the trailing edge. (CPOL)
+// <id> spi_master_arch_cpol
+#ifndef CONF_SERCOM_3_SPI_CPOL
+#define CONF_SERCOM_3_SPI_CPOL 0x0
+#endif
+
+// <o> Clock Phase
+// <0x0=>Sample input on leading edge
+// <0x1=>Sample input on trailing edge
+// <i> Determines if input data is sampled on leading or trailing SCK edge. (CPHA)
+// <id> spi_master_arch_cpha
+#ifndef CONF_SERCOM_3_SPI_CPHA
+#define CONF_SERCOM_3_SPI_CPHA 0x0
+#endif
+
+// <o> Immediate Buffer Overflow Notification
+// <i> Controls when OVF is asserted (IBON)
+// <0x0=>In data stream
+// <0x1=>On buffer overflow
+// <id> spi_master_arch_ibon
+#ifndef CONF_SERCOM_3_SPI_IBON
+#define CONF_SERCOM_3_SPI_IBON 0x0
+#endif
+
+// <q> Run in stand-by
+// <i> Module stays active in stand-by sleep mode. (RUNSTDBY)
+// <id> spi_master_arch_runstdby
+#ifndef CONF_SERCOM_3_SPI_RUNSTDBY
+#define CONF_SERCOM_3_SPI_RUNSTDBY 0x0
+#endif
+
+// <o> Debug Stop Mode
+// <i> Behavior of the baud-rate generator when CPU is halted by external debugger. (DBGSTOP)
+// <0=>Keep running
+// <1=>Halt
+// <id> spi_master_arch_dbgstop
+#ifndef CONF_SERCOM_3_SPI_DBGSTOP
+#define CONF_SERCOM_3_SPI_DBGSTOP 0
+#endif
+
+// </e>
+
+// Address mode disabled in master mode
+#ifndef CONF_SERCOM_3_SPI_AMODE_EN
+#define CONF_SERCOM_3_SPI_AMODE_EN 0
+#endif
+
+#ifndef CONF_SERCOM_3_SPI_AMODE
+#define CONF_SERCOM_3_SPI_AMODE 0
+#endif
+
+#ifndef CONF_SERCOM_3_SPI_ADDR
+#define CONF_SERCOM_3_SPI_ADDR 0
+#endif
+
+#ifndef CONF_SERCOM_3_SPI_ADDRMASK
+#define CONF_SERCOM_3_SPI_ADDRMASK 0
+#endif
+
+#ifndef CONF_SERCOM_3_SPI_SSDE
+#define CONF_SERCOM_3_SPI_SSDE 0
+#endif
+
+#ifndef CONF_SERCOM_3_SPI_MSSEN
+#define CONF_SERCOM_3_SPI_MSSEN 0x0
+#endif
+
+#ifndef CONF_SERCOM_3_SPI_PLOADEN
+#define CONF_SERCOM_3_SPI_PLOADEN 0
+#endif
+
+// <o> Receive Data Pinout
+// <0x0=>PAD[0]
+// <0x1=>PAD[1]
+// <0x2=>PAD[2]
+// <0x3=>PAD[3]
+// <id> spi_master_rxpo
+#ifndef CONF_SERCOM_3_SPI_RXPO
+#define CONF_SERCOM_3_SPI_RXPO 2
+#endif
+
+// <o> Transmit Data Pinout
+// <0x0=>PAD[0,1]_DO_SCK
+// <0x1=>PAD[2,3]_DO_SCK
+// <0x2=>PAD[3,1]_DO_SCK
+// <0x3=>PAD[0,3]_DO_SCK
+// <id> spi_master_txpo
+#ifndef CONF_SERCOM_3_SPI_TXPO
+#define CONF_SERCOM_3_SPI_TXPO 0
+#endif
+
+// Calculate baud register value from requested baudrate value
+#ifndef CONF_SERCOM_3_SPI_BAUD_RATE
+#define CONF_SERCOM_3_SPI_BAUD_RATE ((float)CONF_GCLK_SERCOM3_CORE_FREQUENCY / (float)(2 * CONF_SERCOM_3_SPI_BAUD)) - 1
+#endif
 
 #include <peripheral_clk_config.h>