void nrf_drv_pwm_complex_playback(nrf_drv_pwm_t const * const p_instance,
nrf_pwm_sequence_t const * p_sequence_0,
nrf_pwm_sequence_t const * p_sequence_1,
uint16_t playback_count,
uint32_t flags)
{
pwm_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];
ASSERT(p_cb->state != NRF_DRV_STATE_UNINITIALIZED);
ASSERT(playback_count > 0);
ASSERT(nrf_drv_is_in_RAM(p_sequence_0->values.p_raw));
ASSERT(nrf_drv_is_in_RAM(p_sequence_1->values.p_raw));
nrf_pwm_sequence_set(p_instance->p_registers, 0, p_sequence_0);
nrf_pwm_sequence_set(p_instance->p_registers, 1, p_sequence_1);
nrf_pwm_loop_set(p_instance->p_registers, playback_count);
uint32_t shorts_mask;
if (flags & NRF_DRV_PWM_FLAG_STOP)
{
shorts_mask = NRF_PWM_SHORT_LOOPSDONE_STOP_MASK;
}
else if (flags & NRF_DRV_PWM_FLAG_LOOP)
{
shorts_mask = NRF_PWM_SHORT_LOOPSDONE_SEQSTART0_MASK;
}
else
{
shorts_mask = 0;
}
nrf_pwm_shorts_set(p_instance->p_registers, shorts_mask);
start_playback(p_instance, p_cb, flags, NRF_PWM_TASK_SEQSTART0);
}
ret_code_t nrf_drv_spis_buffers_set(nrf_drv_spis_t const * const p_instance,
const uint8_t * p_tx_buffer,
uint8_t tx_buffer_length,
uint8_t * p_rx_buffer,
uint8_t rx_buffer_length)
{
spis_cb_t * p_cb = &m_cb[p_instance->instance_id];
uint32_t err_code;
VERIFY_PARAM_NOT_NULL(p_rx_buffer);
VERIFY_PARAM_NOT_NULL(p_tx_buffer);
// EasyDMA requires that transfer buffers are placed in Data RAM region;
// signal error if they are not.
if ((p_tx_buffer != NULL && !nrf_drv_is_in_RAM(p_tx_buffer)) ||
(p_rx_buffer != NULL && !nrf_drv_is_in_RAM(p_rx_buffer)))
{
err_code = NRF_ERROR_INVALID_ADDR;
NRF_LOG_WARNING("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)ERR_TO_STR(err_code));
return err_code;
}
switch (p_cb->spi_state)
{
case SPIS_STATE_INIT:
case SPIS_XFER_COMPLETED:
case SPIS_BUFFER_RESOURCE_CONFIGURED:
p_cb->tx_buffer = p_tx_buffer;
p_cb->rx_buffer = p_rx_buffer;
p_cb->tx_buffer_size = tx_buffer_length;
p_cb->rx_buffer_size = rx_buffer_length;
err_code = NRF_SUCCESS;
spis_state_change(p_instance->p_reg, p_cb, SPIS_BUFFER_RESOURCE_REQUESTED);
break;
case SPIS_BUFFER_RESOURCE_REQUESTED:
err_code = NRF_ERROR_INVALID_STATE;
break;
default:
// @note: execution of this code path would imply internal error in the design.
err_code = NRF_ERROR_INTERNAL;
break;
}
NRF_LOG_INFO("Function: %s, error code: %s.\r\n", (uint32_t)__func__, (uint32_t)ERR_TO_STR(err_code));
return err_code;
}
ret_code_t nrf_drv_qspi_read(void * p_rx_buffer,
size_t rx_buffer_length,
uint32_t src_address)
{
ASSERT(m_cb.state != NRF_DRV_STATE_UNINITIALIZED);
ASSERT(p_rx_buffer != NULL);
if (!nrf_drv_is_in_RAM(p_rx_buffer))
{
return NRF_ERROR_INVALID_ADDR;
}
nrf_qspi_read_buffer_set(NRF_QSPI, p_rx_buffer, rx_buffer_length, src_address);
return qspi_task_perform(NRF_QSPI_TASK_READSTART);
}
ret_code_t nrf_drv_qspi_write(void const * p_tx_buffer,
size_t tx_buffer_length,
uint32_t dst_address)
{
ASSERT(m_cb.state != NRF_DRV_STATE_UNINITIALIZED);
ASSERT(p_tx_buffer != NULL);
if (!nrf_drv_is_in_RAM(p_tx_buffer))
{
return NRF_ERROR_INVALID_ADDR;
}
nrf_qspi_write_buffer_set(NRF_QSPI, p_tx_buffer, tx_buffer_length, dst_address);
return qspi_task_perform(NRF_QSPI_TASK_WRITESTART);
}
void nrf_drv_pwm_simple_playback(nrf_drv_pwm_t const * const p_instance,
nrf_pwm_sequence_t const * p_sequence,
uint16_t playback_count,
uint32_t flags)
{
pwm_control_block_t * p_cb = &m_cb[p_instance->drv_inst_idx];
ASSERT(p_cb->state != NRF_DRV_STATE_UNINITIALIZED);
ASSERT(playback_count > 0);
ASSERT(nrf_drv_is_in_RAM(p_sequence->values.p_raw));
// To take advantage of the looping mechanism, we need to use both sequences
// (single sequence can be played back only once).
nrf_pwm_sequence_set(p_instance->p_registers, 0, p_sequence);
nrf_pwm_sequence_set(p_instance->p_registers, 1, p_sequence);
bool odd = (playback_count & 1);
nrf_pwm_loop_set(p_instance->p_registers, playback_count / 2 + (odd ? 1 : 0));
uint32_t shorts_mask;
if (flags & NRF_DRV_PWM_FLAG_STOP)
{
shorts_mask = NRF_PWM_SHORT_LOOPSDONE_STOP_MASK;
}
else if (flags & NRF_DRV_PWM_FLAG_LOOP)
{
shorts_mask = odd ? NRF_PWM_SHORT_LOOPSDONE_SEQSTART1_MASK
: NRF_PWM_SHORT_LOOPSDONE_SEQSTART0_MASK;
}
else
{
shorts_mask = 0;
}
nrf_pwm_shorts_set(p_instance->p_registers, shorts_mask);
start_playback(p_instance, p_cb, flags, odd ? NRF_PWM_TASK_SEQSTART1
: NRF_PWM_TASK_SEQSTART0);
}
ret_code_t nrf_drv_i2s_start(uint32_t * p_rx_buffer,
uint32_t * p_tx_buffer,
uint16_t buffer_size,
uint8_t flags)
{
ASSERT((p_rx_buffer != NULL) || (p_tx_buffer != NULL));
uint16_t buffer_half_size = buffer_size / 2;
ASSERT(buffer_half_size != 0);
VERIFY_MODULE_INITIALIZED();
ret_code_t err_code;
if ((p_rx_buffer != NULL) && !nrf_drv_is_in_RAM(p_rx_buffer))
{
err_code = NRF_ERROR_INVALID_ADDR;
NRF_LOG_WARNING("Function: %s, error code: %s.",
(uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
return err_code;
}
if ((p_tx_buffer != NULL) && !nrf_drv_is_in_RAM(p_tx_buffer))
{
err_code = NRF_ERROR_INVALID_ADDR;
NRF_LOG_WARNING("Function: %s, error code: %s.",
(uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
return err_code;
}
// Initially we set up the peripheral to use the first half of each buffer,
// then in 'I2S_IRQHandler' we will switch to the second half.
nrf_i2s_transfer_set(NRF_I2S, buffer_half_size, p_rx_buffer, p_tx_buffer);
m_cb.p_rx_buffer = p_rx_buffer;
m_cb.p_tx_buffer = p_tx_buffer;
m_cb.buffer_half_size = buffer_half_size;
m_cb.just_started = true;
if ((flags & NRF_DRV_I2S_FLAG_SYNCHRONIZED_MODE) &&
// [synchronized mode makes sense only when both RX and TX are enabled]
(m_cb.p_rx_buffer != NULL) && (m_cb.p_tx_buffer != NULL))
{
m_cb.synchronized_mode = true;
m_cb.rx_ready = false;
m_cb.tx_ready = false;
}
else
{
m_cb.synchronized_mode = false;
}
nrf_i2s_enable(NRF_I2S);
m_cb.state = NRF_DRV_STATE_POWERED_ON;
if (m_cb.p_tx_buffer != NULL)
{
// Get from the application the first portion of data to be sent - we
// need to have it in the transmit buffer before we start the transfer.
// Unless the synchronized mode is active. In this mode we must wait
// with this until the first portion of data is received, so here we
// just make sure that there will be silence on the SDOUT line prior
// to that moment.
if (m_cb.synchronized_mode)
{
memset(m_cb.p_tx_buffer, 0,
m_cb.buffer_half_size * sizeof(uint32_t));
}
else
{
m_cb.handler(NULL, m_cb.p_tx_buffer, m_cb.buffer_half_size);
}
}
nrf_i2s_event_clear(NRF_I2S, NRF_I2S_EVENT_RXPTRUPD);
nrf_i2s_event_clear(NRF_I2S, NRF_I2S_EVENT_TXPTRUPD);
nrf_i2s_int_enable(NRF_I2S,
NRF_I2S_INT_RXPTRUPD_MASK | NRF_I2S_INT_TXPTRUPD_MASK);
nrf_i2s_task_trigger(NRF_I2S, NRF_I2S_TASK_START);
err_code = NRF_SUCCESS;
NRF_LOG_INFO("Function: %s, error code: %s.",
(uint32_t)__func__, (uint32_t)NRF_LOG_ERROR_STRING_GET(err_code));
return err_code;
}