USB Device software

USB software that responds to configuration requests from the USB host and sets up the device with the supplied Device and Configuration Descriptors. Demonstration application that mimics the behavior of the 'hello_world' test program, but directs its output over a USB simpleserial connection instead. Co-authored-by: Marno van der Maas <[email protected]>
lowRISC · May 2, 2024 · 163d9a6 · 163d9a6
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commit 163d9a6
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Showing 8 changed files with 707 additions and 1 deletion.
diff --git a/sw/legacy/common/CMakeLists.txt b/sw/legacy/common/CMakeLists.txt
@@ -1,2 +1,2 @@
-add_library(common OBJECT sonata_system.c uart.c timer.c rv_plic.c gpio.c i2c.c pwm.c spi.c crt0.S)
+add_library(common OBJECT sonata_system.c usbdev.c uart.c timer.c rv_plic.c gpio.c i2c.c pwm.c spi.c crt0.S)
 target_include_directories(common INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}")
diff --git a/sw/legacy/common/sonata_system.h b/sw/legacy/common/sonata_system.h
@@ -31,6 +31,7 @@
 #define DEFAULT_I2C I2C_FROM_BASE_ADDR(I2C0_BASE)
 #define FLASH_SPI SPI_FROM_BASE_ADDR(SPI0_BASE)
 #define LCD_SPI SPI_FROM_BASE_ADDR(SPI1_BASE)
+#define DEFAULT_USBDEV USBDEV0_BASE
 
 /**
  * Writes character to default UART. Signature matches c stdlib function

diff --git a/sw/legacy/common/sonata_system_regs.h b/sw/legacy/common/sonata_system_regs.h
@@ -19,6 +19,8 @@
 #define SPI0_BASE  0x80300000
 #define SPI1_BASE  0x80301000
 
+#define USBDEV0_BASE 0x80400000
+
 #define RV_PLIC_BASE 0x88000000
 
 #define SIM_CTRL_BASE 0x20000