int getCommand(UsbCommand* response)
{
//If head == tail, there's nothing to read, or if we just got initialized
- if(cmd_head == cmd_tail){
- return 0;
- }
+ if(cmd_head == cmd_tail) return 0;
+
//Pick out the next unread command
UsbCommand* last_unread = &cmdBuffer[cmd_tail];
memcpy(response, last_unread, sizeof(UsbCommand));
cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
return 1;
-
}
/**
if (response == NULL)
response = &resp;
-
// Wait until the command is received
for(size_t dm_seconds=0; dm_seconds < ms_timeout/10; dm_seconds++) {
case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K: {
memcpy(sample_buf+(UC->arg[0]),UC->d.asBytes,UC->arg[1]);
+ return;
} break;
- default:
- break;
+ default: break;
}
storeCommand(UC);
}
//* \brief Read available data from Endpoint OUT\r
//*----------------------------------------------------------------------------\r
uint32_t usb_read(byte_t* data, size_t len) {\r
- byte_t bank = btReceiveBank;\r
+ byte_t bank = btReceiveBank;\r
uint32_t packetSize, nbBytesRcv = 0;\r
- uint32_t time_out = 0;\r
+ uint32_t time_out = 0;\r
\r
while (len) {\r
if (!usb_check()) break;\r
\r
if ( pUdp->UDP_CSR[AT91C_EP_OUT] & bank ) {\r
packetSize = MIN(pUdp->UDP_CSR[AT91C_EP_OUT] >> 16, len);\r
- len -= packetSize;\r
+ len -= packetSize;\r
while(packetSize--)\r
data[nbBytesRcv++] = pUdp->UDP_FDR[AT91C_EP_OUT];\r
+ \r
pUdp->UDP_CSR[AT91C_EP_OUT] &= ~(bank);\r
- if (bank == AT91C_UDP_RX_DATA_BK0) {\r
+ \r
+ if (bank == AT91C_UDP_RX_DATA_BK0)\r
bank = AT91C_UDP_RX_DATA_BK1;\r
- } else {\r
- bank = AT91C_UDP_RX_DATA_BK0;\r
- }\r
+ else\r
+ bank = AT91C_UDP_RX_DATA_BK0; \r
}\r
- if (time_out++ == 0x1fff) break;\r
+ if (time_out++ == 0x1fff) break;\r
}\r
\r
btReceiveBank = bank;\r
//* \brief Send through endpoint 2\r
//*----------------------------------------------------------------------------\r
uint32_t usb_write(const byte_t* data, const size_t len) {\r
- size_t length = len;\r
+ size_t length = len;\r
uint32_t cpt = 0;\r
\r
- if (!length) return 0;\r
- if (!usb_check()) return 0;\r
+ if (!length) return 0;\r
+ if (!usb_check()) return 0;\r
\r
// Send the first packet\r
cpt = MIN(length, AT91C_EP_IN_SIZE-1);\r
// Wait for the the first bank to be sent\r
while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r
if (!usb_check()) return length;\r
- }\r
+ }\r
pUdp->UDP_CSR[AT91C_EP_IN] &= ~(AT91C_UDP_TXCOMP);\r
+ \r
while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r
+ \r
pUdp->UDP_CSR[AT91C_EP_IN] |= AT91C_UDP_TXPKTRDY;\r
}\r
\r
// Wait for the end of transfer\r
while (!(pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP)) {\r
if (!usb_check()) return length;\r
- }\r
+ }\r
\r
pUdp->UDP_CSR[AT91C_EP_IN] &= ~(AT91C_UDP_TXCOMP);\r
while (pUdp->UDP_CSR[AT91C_EP_IN] & AT91C_UDP_TXCOMP);\r