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#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
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