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-rw-r--r--usb/f1_usb.h1
-rw-r--r--usb/l0_usb.h174
-rw-r--r--usb/l0_usb_def.h37
-rw-r--r--usb/usb.h5
4 files changed, 216 insertions, 1 deletions
diff --git a/usb/f1_usb.h b/usb/f1_usb.h
index 166c051..8510bb9 100644
--- a/usb/f1_usb.h
+++ b/usb/f1_usb.h
@@ -3,7 +3,6 @@
#include "generic.h"
#include "f1_usb_def.h"
-#include "dwc_otg_def.h"
class USB_f1 : public USB_generic {
private:
diff --git a/usb/l0_usb.h b/usb/l0_usb.h
new file mode 100644
index 0000000..243f19b
--- /dev/null
+++ b/usb/l0_usb.h
@@ -0,0 +1,174 @@
+#ifndef L0_USB_H
+#define L0_USB_H
+
+#include "generic.h"
+#include "l0_usb_def.h"
+
+class USB_l0 : public USB_generic {
+ private:
+ L0_USB_t& usb;
+
+ uint32_t setupbuf[16];
+
+ uint32_t buf_end;
+
+ uint8_t pending_addr;
+
+ protected:
+ virtual void hw_set_address(uint8_t addr) {
+ usb_rblog.log("SetAddress: %d", addr);
+
+ pending_addr = addr;
+ }
+
+ virtual void hw_conf_ep(uint8_t ep, EPType type, uint32_t size) {
+ usb_rblog.log("Configuring EP%02x: size=%d", ep, size);
+
+ uint8_t in = ep & 0x80;
+ ep &= 0x7f;
+
+ uint32_t old_epr = usb.reg.EPR[ep];
+ //uint32_t new_epr = 0x3220;
+ uint32_t new_epr = 0x8080 | ((type == EPType::Bulk ? 0 : type == EPType::Control ? 1 : type == EPType::Isochronous ? 2 : 3) << 9) | ep;
+
+ if(in || ep == 0) {
+ usb.bufd[ep].ADDR_TX = buf_end;
+ buf_end += size;
+
+ new_epr |= (old_epr & 0x0070) ^ 0x0020;
+ }
+
+ if(!in) {
+ usb.bufd[ep].ADDR_RX = buf_end;
+ buf_end += size;
+ usb.bufd[ep].COUNT_RX = 0x8000 | (1 << 10);
+
+ new_epr |= (old_epr & 0x7000) ^ 0x3000;
+ }
+
+ usb.reg.EPR[ep] = new_epr;
+
+ usb_rblog.log("EPR: old=%04x, new=%04x", old_epr, usb.reg.EPR[ep]);
+ }
+
+ virtual void hw_set_stall(uint8_t ep) {
+ usb_rblog.log("Setting stall on EP %d", ep);
+
+ usb.reg.EPR[ep] = (usb.reg.EPR[ep] & 0x878f) | 0x2030;
+
+ //otg.dev_iep_reg[ep].DIEPCTL |= (1 << 21);
+ }
+
+ public:
+ USB_l0(L0_USB_t& usb_periph, desc_t dev, desc_t conf) : USB_generic(dev, conf), usb(usb_periph) {}
+
+ void init() {
+ usb.reg.CNTR = 3;
+ Time::sleep(10);
+ usb.reg.CNTR = 1;
+ Time::sleep(10);
+ // Exit power down mode.
+ usb.reg.CNTR = 0;
+ }
+
+ void process() {
+ uint32_t istr = usb.reg.ISTR;
+
+ if(istr & (1 << 10)) {
+ usb_rblog.log("USB Reset");
+
+ buf_end = 0x40;
+
+ usb.reg.DADDR = 0x80;
+
+ handle_reset();
+
+ usb.reg.ISTR = ~(1 << 10);
+
+ return;
+ }
+
+ if(istr & (1 << 15)) {
+ usb_rblog.log("USB Transfer: %02x", istr & 0x1f);
+
+ uint32_t ep = istr & 0xf;
+ uint32_t dir = istr & 0x10;
+
+ usb_rblog.log("EPR%d: %04x", ep, usb.reg.EPR[ep]);
+
+ if(dir) {
+ // RX.
+
+ usb_rblog.log("RXBUF: ADDR: %04x, COUNT: %04x", usb.bufd[ep].ADDR_RX, usb.bufd[ep].COUNT_RX);
+
+ uint32_t len = usb.bufd[ep].COUNT_RX & 0x03ff;
+
+ if(usb.reg.EPR[ep] & (1 << 11)) {
+ usb_rblog.log("SETUP packet received");
+
+ read(0, setupbuf, 8);
+
+ handle_setup(setupbuf);
+
+ } else {
+ usb_rblog.log("OUT packet received");
+
+ handle_out(ep, len);
+ }
+
+ //usb.reg.EPR[ep] = 0x9280;
+ //usb.reg.EPR[ep] &= 0x078f;
+
+ usb.reg.EPR[ep] = (usb.reg.EPR[ep] & 0x078f) | 0x1000;
+ } else {
+ // TX.
+
+ usb_rblog.log("TXBUF: ADDR: %04x, COUNT: %04x", usb.bufd[ep].ADDR_TX, usb.bufd[ep].COUNT_TX);
+
+ if(pending_addr) {
+ usb_rblog.log("Actually changing addr to: %d", pending_addr);
+
+ usb.reg.DADDR = 0x80 | pending_addr;
+
+ pending_addr = 0;
+ }
+
+ usb.reg.EPR[ep] &= 0x870f;
+ }
+ usb_rblog.log("Leaving: EPR%d: %04x", ep, usb.reg.EPR[ep]);
+ }
+ }
+
+ virtual bool ep_ready(uint32_t ep) {
+ return (usb.reg.EPR[ep] & 0x30) == 0x20;
+ }
+
+ virtual void write(uint32_t ep, uint32_t* bufp, uint32_t len) {
+ usb_rblog.log("Writing, ep=%d, len=%d", ep, len);
+
+ uint16_t* p = (uint16_t*)bufp;
+ uint32_t base = usb.bufd[ep].ADDR_TX >> 1;
+
+ for(uint32_t i = 0; i < len; i += 2) {
+ usb.buf[base + (i >> 1)] = *p++;
+ }
+
+ usb.bufd[ep].COUNT_TX = len;
+ usb.reg.EPR[ep] = (usb.reg.EPR[ep] & 0x870f) | 0x0010;
+ }
+
+ virtual uint32_t read(uint32_t ep, uint32_t* bufp, uint32_t len) {
+ usb_rblog.log("Reading, ep=%d, len=%d", ep, len);
+
+ uint16_t* p = (uint16_t*)bufp;
+ uint32_t base = usb.bufd[ep].ADDR_RX >> 1;
+
+ for(uint32_t i = 0; i < len; i += 2) {
+ *p++ = uint16_t(usb.buf[base + (i >> 1)]);
+ }
+
+ return len;
+ }
+};
+
+#endif
diff --git a/usb/l0_usb_def.h b/usb/l0_usb_def.h
new file mode 100644
index 0000000..b9d8d10
--- /dev/null
+++ b/usb/l0_usb_def.h
@@ -0,0 +1,37 @@
+#ifndef L0_USB_DEF_H
+#define L0_USB_DEF_H
+
+#include <stdint.h>
+
+class L0_USB_t {
+ private:
+ struct L0_USB_reg_t {
+ volatile uint32_t EPR[16];
+ volatile uint32_t CNTR;
+ volatile uint32_t ISTR;
+ volatile uint32_t FNR;
+ volatile uint32_t DADDR;
+ volatile uint32_t BTABLE;
+ volatile uint32_t LPMCSR;
+ volatile uint32_t BCDR;
+ };
+
+ struct L0_USB_bufd_t {
+ volatile uint16_t ADDR_TX;
+ volatile uint16_t COUNT_TX;
+ volatile uint16_t ADDR_RX;
+ volatile uint16_t COUNT_RX;
+ };
+
+ public:
+ L0_USB_reg_t& reg;
+ L0_USB_bufd_t* bufd;
+ volatile uint16_t* buf;
+
+ L0_USB_t(uint32_t reg_addr, uint32_t buf_addr) :
+ reg(*(L0_USB_reg_t*)reg_addr),
+ bufd((L0_USB_bufd_t*)buf_addr),
+ buf((volatile uint16_t*)buf_addr) {}
+};
+
+#endif
diff --git a/usb/usb.h b/usb/usb.h
index b6a45f2..f37f4a1 100644
--- a/usb/usb.h
+++ b/usb/usb.h
@@ -12,6 +12,11 @@ static F1_USB_t USB(0x40005c00, 0x40006000);
static DWC_OTG_t OTG_FS(0x50000000);
static DWC_OTG_t OTG_HS(0x40040000);
+#elif defined(STM32L0)
+#include "l0_usb.h"
+
+static L0_USB_t USB(0x40005c00, 0x40006000);
+
#endif
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 08:11:16 +0100