mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-22 12:12:50 +02:00
Updated atusd driver for new hardware. Make use of the interrupt line.
- tools/lib/atusd.c (spi_send_partial, spi_send): removed the old spi_send and renamed spi_send_partial to spi_send - tools/lib/atusd.c (atusd_cycle, spi_send, spi_recv, atusd_open): updated for removal of SLP_TR and split of MxSx into MOSI and MISO - tools/lib/atusd.c (atusd_reset_rf, atusd_open): added delays to precharge the capacitors - tools/lib/atusd.c (atusd_reset, spi_data_in, spi_data_out, spi_finish): removed functions for obsolete hardware features - tools/lib/atusd.c (atusd_reg_read): removed calls to removed functions - tools/lib/atusd.c (atusd_buf_write, atusd_buf_read, atusd_driver): new buffer read/write functions - tools/atspi-txrx/atspi-txrx.c (init_txrx): set the internal osciallator trim only in the USB version. Switch to the external oscillator in the uSD version. - tools/atspi-rssi/atspi-rssi.c (sweep), tools/atspi-txrx/atspi-txrx.c (set_channel): wait for the PLL to settle after setting the channel - tools/include/atspi.h, tools/lib/atspi.c (atspi_interrupt), tools/lib/driver.h (struct atspi_driver), tools/lib/atusd.c (atusd_interrupt): new function to poll the interrupt line - tools/atspi-txrx/atspi-txrx.c (receive): only read REG_IRQ_STATUS if there is a pending interrupt - tools/atspi-id/atspi-id.c (usage): print "usage:" as well - tools/Makefile (upload): upload the atspi tools to the Ben
This commit is contained in:
Werner Almesberger
parent
284b557434
commit
18eec557d0
@ -15,3 +15,8 @@ DIRS=atspi-id atspi-reset atspi-rssi atspi-trim atspi-txrx
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TARGET_ONLY_DIRS=lib
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include ../Makefile.recurse
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.PHONY: upload
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upload:
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scp `for n in $(DIRS); do echo $$n/$$n; done` ben:
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@ -127,7 +127,7 @@ static void show_info(struct atspi_dsc *dsc)
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static void usage(const char *name)
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{
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fprintf(stderr, "%s\n", name);
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fprintf(stderr, "usage: %s\n", name);
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exit(1);
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}
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@ -30,6 +30,8 @@ static void sweep(struct atspi_dsc *dsc)
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for (chan = 11; chan <= 26; chan++) {
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atspi_reg_write(dsc, REG_PHY_CC_CCA, chan);
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/* 150 us, according to AVR2001 section 3.5 */
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usleep(1000);
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/*
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* No need to explicitly wait for the PPL lock - going USB-SPI
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* is pretty slow, leaving the transceiver plenty of time.
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@ -55,8 +55,12 @@ static struct atspi_dsc *init_txrx(int trim)
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atspi_reset_rf(dsc);
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atspi_reg_write(dsc, REG_TRX_STATE, TRX_CMD_TRX_OFF);
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#ifdef HAVE_USB /* @@@ yeah, ugly */
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atspi_reg_write(dsc, REG_XOSC_CTRL,
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(XTAL_MODE_INT << XTAL_MODE_SHIFT) | trim);
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#else
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atspi_reg_write(dsc, REG_XOSC_CTRL, XTAL_MODE_EXT << XTAL_MODE_SHIFT);
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#endif
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atspi_reg_write(dsc, REG_TRX_CTRL_0, 0); /* disable CLKM */
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return dsc;
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@ -66,6 +70,11 @@ static struct atspi_dsc *init_txrx(int trim)
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static void set_channel(struct atspi_dsc *dsc, int channel)
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{
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atspi_reg_write(dsc, REG_PHY_CC_CCA, (1 << CCA_MODE_SHIFT) | channel);
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/*
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* 150 us, according to AVR2001 section 3.5. Note that we should just
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* wait for the PPL_LOCK interrupt.
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*/
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usleep(1000);
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}
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@ -93,6 +102,8 @@ static void receive(struct atspi_dsc *dsc)
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fprintf(stderr, "Ready.\n");
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while (1) {
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while (!atspi_interrupt(dsc))
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usleep(10);
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irq = atspi_reg_read(dsc, REG_IRQ_STATUS);
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if (atspi_error(dsc))
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exit(1);
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@ -36,4 +36,6 @@ uint8_t atspi_reg_read(struct atspi_dsc *dsc, uint8_t reg);
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void atspi_buf_write(struct atspi_dsc *dsc, const void *buf, int size);
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int atspi_buf_read(struct atspi_dsc *dsc, void *buf, int size);
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int atspi_interrupt(struct atspi_dsc *dsc);
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#endif /* !ATSPI_H */
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@ -121,3 +121,10 @@ int atspi_buf_read(struct atspi_dsc *dsc, void *buf, int size)
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{
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return dsc->driver->buf_read(dsc->handle, buf, size);
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}
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int atspi_interrupt(struct atspi_dsc *dsc)
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{
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return
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dsc->driver->interrupt ? dsc->driver->interrupt(dsc->handle) : 1;
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}
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@ -23,11 +23,11 @@
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enum {
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VDD_OFF = 1 << 6, /* VDD disable, PD06 */
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MxSx = 1 << 8, /* CMD, PD08 */
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VDD_OFF = 1 << 2, /* VDD disable, PD02 */
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MOSI = 1 << 8, /* CMD, PD08 */
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CLK = 1 << 9, /* CLK, PD09 */
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SCLK = 1 << 10, /* DAT0, PD10 */
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SLP_TR = 1 << 11, /* DAT1, PD11 */
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MISO = 1 << 10, /* DAT0, PD10 */
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SCLK = 1 << 11, /* DAT1, PD11 */
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IRQ = 1 << 12, /* DAT2, PD12 */
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nSEL = 1 << 13, /* DAT3/CD, PD13 */
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};
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@ -72,7 +72,7 @@ static void wait_for_power(void)
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{
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/*
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* Give power time to stabilize and the chip time to reset.
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* Experiments show that even usleep(0) is long enough.
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* Power takes about 2 ms to ramp up. We wait 10 ms to be sure.
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*/
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usleep(10*1000);
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}
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@ -84,7 +84,7 @@ static void atusd_cycle(struct atusd_dsc *dsc)
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MSC_STRPCL = 1;
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/* drive all outputs low (including the MMC bus clock) */
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PDDATC = MxSx | CLK | SCLK | SLP_TR | nSEL;
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PDDATC = MOSI | CLK | SCLK | nSEL;
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/* make the MMC bus clock a regular output */
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PDFUNC = CLK;
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@ -95,11 +95,11 @@ static void atusd_cycle(struct atusd_dsc *dsc)
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/* Power drains within about 20 ms. Wait 100 ms to be sure. */
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usleep(100*1000);
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/* drive nSS high */
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PDDATS = nSEL;
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/* drive MOSI and nSS high */
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PDDATS = MOSI | nSEL;
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/* supply power */
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PDDATC = VDD_OFF;
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/* precharge the capacitors to avoid current surge */
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wait_for_power();
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/* return the bus clock output to the MMC controller */
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PDFUNS = CLK;
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@ -107,30 +107,13 @@ static void atusd_cycle(struct atusd_dsc *dsc)
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/* start MMC clock output */
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MSC_STRPCL = 2;
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/* supply power */
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PDDATC = VDD_OFF;
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wait_for_power();
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}
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#if 0 /* we probably won't need this anymore */
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static void atusd_reset(struct atusd_dsc *dsc)
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{
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/* activate reset */
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PDDATS = SLP_TR;
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PDDATC = nSEL;
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/*
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* Data sheet says 625 ns, programmer's guide says 6 us. Whom do we
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* trust ?
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*/
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usleep(6);
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/* release reset */
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PDDATS = nSEL;
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PDDATC = SLP_TR;
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}
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#endif
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/* ----- Low-level SPI operations ------------------------------------------ */
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@ -146,35 +129,17 @@ static void spi_end(struct atusd_dsc *dsc)
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}
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static void spi_data_in(struct atusd_dsc *dsc)
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{
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PDDIRC = MxSx;
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}
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static void spi_data_out(struct atusd_dsc *dsc)
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{
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PDDIRS = MxSx;
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}
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/*
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* Send a sequence of bytes but leave the clock high on the last bit, so that
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* we can turn around the data line for reads.
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*/
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static void spi_send_partial(struct atusd_dsc *dsc, uint8_t v)
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static void spi_send(struct atusd_dsc *dsc, uint8_t v)
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{
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uint8_t mask;
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for (mask = 0x80; mask; mask >>= 1) {
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PDDATC = SCLK;
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if (v & mask)
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PDDATS = MxSx;
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PDDATS = MOSI;
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else
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PDDATC = MxSx;
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PDDATC = MOSI;
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PDDATS = SCLK;
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PDDATC = SCLK;
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}
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}
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@ -185,29 +150,15 @@ static uint8_t spi_recv(struct atusd_dsc *dsc)
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uint8_t mask;
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for (mask = 0x80; mask; mask >>= 1) {
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PDDATC = SCLK;
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if (PDPIN & MxSx)
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if (PDPIN & MISO)
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res |= mask;
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PDDATS = SCLK;
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PDDATC = SCLK;
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}
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PDDATC = SCLK;
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return res;
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}
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static void spi_finish(struct atusd_dsc *dsc)
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{
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PDDATC = SCLK;
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}
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static void spi_send(struct atusd_dsc *dsc, uint8_t v)
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{
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spi_send_partial(dsc, v);
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spi_finish(dsc);
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}
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/* ----- Driver operations ------------------------------------------------- */
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@ -216,6 +167,7 @@ static void atusd_reset_rf(void *handle)
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struct atusd_dsc *dsc = handle;
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atusd_cycle(dsc);
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wait_for_power();
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}
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@ -243,15 +195,18 @@ static void *atusd_open(void)
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/* set the output levels */
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PDDATS = nSEL | VDD_OFF;
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PDDATC = SCLK | SLP_TR;
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PDDATC = SCLK;
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/* take the GPIOs away from the MMC controller */
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PDFUNC = MxSx | SCLK | SLP_TR | IRQ | nSEL;
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PDFUNC = MOSI | MISO | SCLK | IRQ | nSEL;
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PDFUNS = CLK;
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/* set the pin directions */
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PDDIRC = IRQ;
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PDDIRS = MxSx | CLK | SCLK | SLP_TR | nSEL;
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PDDIRC = MISO | IRQ;
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PDDIRS = MOSI | CLK | SCLK | nSEL;
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/* let capacitors precharge */
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wait_for_power();
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/* enable power */
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PDDATC = VDD_OFF;
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@ -286,7 +241,7 @@ static void atusd_close(void *arg)
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PDDATS = VDD_OFF;
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/* make all MMC pins inputs */
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PDDIRC = MxSx | CLK | SCLK | SLP_TR | IRQ | nSEL;
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PDDIRC = MOSI | MISO | CLK | SCLK | IRQ | nSEL;
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}
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@ -307,16 +262,52 @@ static uint8_t atusd_reg_read(void *handle, uint8_t reg)
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uint8_t res;
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spi_begin(dsc);
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spi_send_partial(dsc, AT86RF230_REG_READ| reg);
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spi_data_in(dsc);
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spi_send(dsc, AT86RF230_REG_READ | reg);
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res = spi_recv(dsc);
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spi_finish(dsc);
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spi_data_out(dsc);
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spi_end(dsc);
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return res;
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}
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static void atusd_buf_write(void *handle, const void *buf, int size)
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{
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struct atusd_dsc *dsc = handle;
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spi_begin(dsc);
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spi_send(dsc, AT86RF230_BUF_WRITE);
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spi_send(dsc, size);
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while (size--)
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spi_send(dsc, *(uint8_t *) buf++);
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spi_end(dsc);
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}
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static int atusd_buf_read(void *handle, void *buf, int size)
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{
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struct atusd_dsc *dsc = handle;
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uint8_t len, i;
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spi_begin(dsc);
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spi_send(dsc, AT86RF230_BUF_READ);
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len = spi_recv(dsc);
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len++; /* LQI */
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if (len > size)
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len = size;
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for (i = 0; i != len; i++)
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*(uint8_t *) buf++ = spi_recv(dsc);
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spi_end(dsc);
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return len;
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}
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static int atusd_interrupt(void *handle)
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{
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struct atusd_dsc *dsc = handle;
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return !!(PDPIN & IRQ);
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}
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/* ----- Driver interface -------------------------------------------------- */
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@ -328,8 +319,7 @@ struct atspi_driver atusd_driver = {
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.reset_rf = atusd_reset_rf,
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.reg_write = atusd_reg_write,
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.reg_read = atusd_reg_read,
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#if 0
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.buf_write = atusd_buf_write,
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.buf_read = atusd_buf_read,
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#endif
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.interrupt = atusd_interrupt,
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};
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@ -29,6 +29,7 @@ struct atspi_driver {
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uint8_t (*reg_read)(void *dsc, uint8_t reg);
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void (*buf_write)(void *dsc, const void *buf, int size);
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int (*buf_read)(void *dsc, void *buf, int size);
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int (*interrupt)(void *dsc);
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};
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#endif /* !DRIVER_H */
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