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Diffstat (limited to 'usrp2/firmware/apps/test1.c')
| -rw-r--r-- | usrp2/firmware/apps/test1.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/usrp2/firmware/apps/test1.c b/usrp2/firmware/apps/test1.c new file mode 100644 index 000000000..c3cc3be56 --- /dev/null +++ b/usrp2/firmware/apps/test1.c @@ -0,0 +1,282 @@ +#include "u2_init.h" +#include "memory_map.h" +#include "spi.h" +#include "hal_io.h" +#include "buffer_pool.h" +#include "pic.h" +#include "nonstdio.h" + +// Globals +#define EMPTY 0 +#define FILLING 1 +#define FULL 2 +#define EMPTYING 3 + +#define PORT 2 // ethernet = 2, serdes = 0 +int dsp_rx_buf, dsp_tx_buf, serdes_rx_buf, serdes_tx_buf; +int dsp_rx_idle, dsp_tx_idle, serdes_rx_idle, serdes_tx_idle; + +int buffer_state[4]; + + +void double_buffering(int port); + +// +// We register this in the secondary interrupt vector. +// It's called on buffer manager interrupts +// +void +buffer_irq_handler(unsigned irq) +{ + double_buffering(PORT); +} + +int +main(void) +{ + int i; + + u2_init(); + + // Control LEDs + output_regs->leds = 0x02; + + // Turn on ADCs + output_regs->adc_ctrl = 0x0A; + + // Set up TX Chain + dsp_tx_regs->freq = 0; + dsp_tx_regs->scale_iq = (1 << 16) | 1; + dsp_tx_regs->interp_rate = 8; + + // Set up RX Chain + dsp_rx_regs->freq = 0; + dsp_rx_regs->scale_iq = (1 << 16) | 1; + dsp_rx_regs->decim_rate = 8; + + // Set up buffer control, using only 4 for now + for(i=0;i<4;i++) + buffer_state[i] = EMPTY; + + // Set up DSP RX + buffer_state[0] = FILLING; + serdes_tx_idle = 1; + bp_receive_to_buf(0, 1, 1, 10, 509); // DSP_RX to buffer 0, use 500 lines + + //dsp_rx_regs->run_rx = 1; // Start DSP_RX + putstr("Done DSP RX setup\n"); + + // Set up serdes RX + buffer_state[2] = FILLING; + dsp_tx_idle = 1; + bp_receive_to_buf(2, PORT, 1, 5, 504); + + while (buffer_pool_status->status == 0) // wait for completion of DSP RX + ; + + putstr("Done DSP TX setup\n"); + //dsp_tx_regs->run_tx = 1; + + // register interrupt handler + pic_register_handler(IRQ_BUFFER, buffer_irq_handler); + + while (1) + ; + + hal_finish(); + return 1; +} + +void +double_buffering(int port) { + unsigned int localstatus = buffer_pool_status->status; + + if(localstatus & BPS_DONE_0) { + bp_clear_buf(0); + if(buffer_state[0] == FILLING) { + buffer_state[0] = FULL; + if(buffer_state[1] == EMPTY) { + bp_receive_to_buf(1, 1, 1, 10, 509); // DSP_RX to buffer 1, use 500 lines + buffer_state[1] = FILLING; + } + else + dsp_rx_idle = 1; + if(serdes_tx_idle) { + serdes_tx_idle = 0; + bp_send_from_buf(0, port, 1, 10, 509); // SERDES_TX from buffer 0 + buffer_state[0] = EMPTYING; + } + } + else { // buffer was emptying + buffer_state[0] = EMPTY; + if(dsp_rx_idle) { + dsp_rx_idle = 0; + bp_receive_to_buf(0, 1, 1, 10, 509); // DSP_RX to buffer 0, use 500 lines + buffer_state[0] = FILLING; + } + if(buffer_state[1] == FULL) { + bp_send_from_buf(1, port, 1, 10, 509); // SERDES_TX from buffer 1 + buffer_state[1] = EMPTYING; + } + else + serdes_tx_idle = 1; + } + putstr("Int Proc'ed 0\n"); + } + if(localstatus & BPS_DONE_1) { + bp_clear_buf(1); + if(buffer_state[1] == FILLING) { + buffer_state[1] = FULL; + if(buffer_state[0] == EMPTY) { + bp_receive_to_buf(0, 1, 1, 10, 509); // DSP_RX to buffer 1, use 500 lines + buffer_state[0] = FILLING; + } + else + dsp_rx_idle = 1; + if(serdes_tx_idle) { + serdes_tx_idle = 0; + bp_send_from_buf(1, port, 1, 10, 509); // SERDES_TX from buffer 1 + buffer_state[1] = EMPTYING; + } + } + else { // buffer was emptying + buffer_state[1] = EMPTY; + if(dsp_rx_idle) { + dsp_rx_idle = 0; + bp_receive_to_buf(1, 1, 1, 10, 509); // DSP_RX to buffer 1, use 500 lines + buffer_state[1] = FILLING; + } + if(buffer_state[0] == FULL) { + bp_send_from_buf(0, port, 1, 10, 509); // SERDES_TX from buffer 0 + buffer_state[0] = EMPTYING; + } + else + serdes_tx_idle = 1; + } + putstr("Int Proc'ed 1\n"); + } + if(localstatus & BPS_DONE_2) { + bp_clear_buf(2); + if(buffer_state[2] == FILLING) { + buffer_state[2] = FULL; + if(buffer_state[3] == EMPTY) { + bp_receive_to_buf(3, port, 1, 5, 504); // SERDES_RX to buffer 3, use 500 lines + buffer_state[3] = FILLING; + } + else + serdes_rx_idle = 1; + if(dsp_tx_idle) { + dsp_tx_idle = 0; + bp_send_from_buf(2, 1, 1, 5, 504); // DSP_TX from buffer 2 + buffer_state[2] = EMPTYING; + } + } + else { // buffer was emptying + buffer_state[2] = EMPTY; + if(serdes_rx_idle) { + serdes_rx_idle = 0; + bp_receive_to_buf(2, port, 1, 5, 504); // SERDES_RX to buffer 2 + buffer_state[2] = FILLING; + } + if(buffer_state[3] == FULL) { + bp_send_from_buf(3, 1, 1, 5, 504); // DSP_TX from buffer 3 + buffer_state[3] = EMPTYING; + } + else + dsp_tx_idle = 1; + } + putstr("Int Proc'ed 2\n"); + } + if(localstatus & BPS_DONE_3) { + bp_clear_buf(3); + if(buffer_state[3] == FILLING) { + buffer_state[3] = FULL; + if(buffer_state[2] == EMPTY) { + bp_receive_to_buf(2, port, 1, 5, 504); // SERDES_RX to buffer 2, use 500 lines + buffer_state[2] = FILLING; + } + else + serdes_rx_idle = 1; + if(dsp_tx_idle) { + dsp_tx_idle = 0; + bp_send_from_buf(3, 1, 1, 5, 504); // DSP_TX from buffer 3 + buffer_state[3] = EMPTYING; + } + } + else { // buffer was emptying + buffer_state[3] = EMPTY; + if(serdes_rx_idle) { + serdes_rx_idle = 0; + bp_receive_to_buf(3, port, 1, 5, 504); // SERDES_RX to buffer 3 + buffer_state[3] = FILLING; + } + if(buffer_state[2] == FULL) { + bp_send_from_buf(2, 1, 1, 5, 504); // DSP_TX from buffer 2 + buffer_state[2] = EMPTYING; + } + else + dsp_tx_idle = 1; + } + putstr("Int Proc'ed 3\n"); + } +} + +// Spare Code + +#if 0 + // Set up LSDAC + int i = 0; + while(1) { + int command = (3 << 19) | (0 << 16) | (i & 0xffff); + spi_transact(SPI_TXONLY, SPI_SS_TX_DAC, command, 24, 1); // negate TX phase + i++; + } +#endif + +#if 0 + // Write to buffer 0 + int *buf = (int *)(BUFFER_BASE + BUFFER_0); + puthex_nl((int)buf); + + for(i=0;i<BUFFER_SIZE;i++) + buf[i] = i; + + putstr("Filled buffer 0\n"); + + // Write to buffer 1 + buf = (int *)(BUFFER_BASE + BUFFER_1); + puthex_nl((int)buf); + for(i=0;i<BUFFER_SIZE;i++) + buf[i] = i + ((i^0xFFFF) << 16); + + putstr("Filled buffer 1\n"); + +#endif + +#if 0 + // rx SERDES into buffer #2 (buf,port,step,fl,ll) + bp_receive_to_buf(2, 0, 1, 10, 300); + putstr("SERDES RX buffer setup\n"); + + // send SERDES from buffer #0 (buf,port,step,fl,ll) + bp_send_from_buf(0, 0, 1, 20, 200); + putstr("SERDES TX buffer setup\n"); + +#endif + +#if 0 + // send to DACs from buffer #1 + bp_send_from_buf(1 /*buf#*/, 1 /*port*/, 1 /*step*/, 20 /*fl*/, 250 /*ll*/); + putstr("DAC Buffer setup\n"); +#endif + +#if 0 + //putstr("ENTER INT\n"); + for(i=0;i<8;i++) + if(*status & (1<<i)) { + //putstr("Clearing buf "); + puthex_nl(i); + bp_clear_buf(i); + } + //putstr("EXIT INT\n"); +#endif |