From e2f385946132690ca6dc141d7c7830ae0cfe3458 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Tue, 20 Aug 2013 08:54:44 -0700 Subject: [PATCH] altos: various cc115l driver hacks Try to recover from TX_FIFO_UNDERFLOW by resetting the chip at idle time. Do a calibration phase during setup. Program power to ramp up to limit key down noise. Signed-off-by: Keith Packard --- src/drivers/ao_cc115l.c | 37 ++++++++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 11 deletions(-) diff --git a/src/drivers/ao_cc115l.c b/src/drivers/ao_cc115l.c index 56afc3c7..0fa1e899 100644 --- a/src/drivers/ao_cc115l.c +++ b/src/drivers/ao_cc115l.c @@ -245,6 +245,8 @@ ao_radio_idle(void) uint8_t state = ao_radio_strobe(CC115L_SIDLE); if ((state >> CC115L_STATUS_STATE) == CC115L_STATUS_STATE_IDLE) break; + if ((state >> CC115L_STATUS_STATE) == CC115L_STATUS_STATE_TX_FIFO_UNDERFLOW) + ao_radio_strobe(CC115L_SFTX); } /* Flush any pending TX bytes */ ao_radio_strobe(CC115L_SFTX); @@ -476,6 +478,8 @@ ao_radio_setup(void) ao_config_get(); + ao_radio_strobe(CC115L_SCAL); + ao_radio_configured = 1; } @@ -494,7 +498,6 @@ static void ao_radio_get(void) { static uint32_t last_radio_setting; - static uint8_t last_power_setting; ao_mutex_get(&ao_radio_mutex); if (!ao_radio_configured) @@ -505,10 +508,6 @@ ao_radio_get(void) ao_radio_reg_write(CC115L_FREQ0, ao_config.radio_setting); last_radio_setting = ao_config.radio_setting; } - if (ao_config.radio_power != last_power_setting) { - ao_radio_reg_write(CC115L_PA, ao_config.radio_power); - last_power_setting = ao_config.radio_power; - } } static void @@ -614,6 +613,20 @@ ao_radio_rdf_abort(void) ao_wakeup(&ao_radio_wake); } +#define POWER_STEP 0x08 + +static void +ao_radio_stx(void) +{ + uint8_t power; + ao_radio_pa_on(); + ao_radio_reg_write(CC115L_PA, 0); + ao_radio_strobe(CC115L_STX); + for (power = POWER_STEP; power < ao_config.radio_power; power += POWER_STEP) + ao_radio_reg_write(CC115L_PA, power); + ao_radio_reg_write(CC115L_PA, ao_config.radio_power); +} + static void ao_radio_test_cmd(void) { @@ -633,11 +646,10 @@ ao_radio_test_cmd(void) ao_packet_slave_stop(); #endif ao_radio_get(); - ao_radio_set_len(0xff); - ao_radio_set_mode(AO_RADIO_MODE_RDF|AO_RADIO_MODE_BITS_FIXED); ao_radio_strobe(CC115L_SFTX); - ao_radio_pa_on(); - ao_radio_strobe(CC115L_STX); + ao_radio_set_len(0xff); + ao_radio_set_mode(AO_RADIO_MODE_RDF); + ao_radio_stx(); radio_on = 1; } if (mode == 3) { @@ -740,6 +752,10 @@ _ao_radio_send_lots(ao_radio_fill_func fill, uint8_t mode) uint8_t fifo_space; fifo_space = CC115L_FIFO_SIZE; + ao_radio_abort = 0; + + ao_radio_strobe(CC115L_SFTX); + ao_radio_done = 0; ao_radio_fifo = 0; while (!done) { @@ -786,8 +802,7 @@ _ao_radio_send_lots(ao_radio_fill_func fill, uint8_t mode) ao_exti_enable(AO_CC115L_DONE_INT_PORT, AO_CC115L_DONE_INT_PIN); if (!started) { - ao_radio_pa_on(); - ao_radio_strobe(CC115L_STX); + ao_radio_stx(); started = 1; } } -- 2.30.2