static int mcux_lpsci_irq_rx_full(struct device *dev)
{
const struct mcux_lpsci_config *config = dev->config->config_info;
u32_t flags = LPSCI_GetStatusFlags(config->base);
return (flags & kLPSCI_RxDataRegFullFlag) != 0;
}
static int mcux_lpsci_irq_tx_complete(struct device *dev)
{
const struct mcux_lpsci_config *config = dev->config->config_info;
u32_t flags = LPSCI_GetStatusFlags(config->base);
return (flags & kLPSCI_TxDataRegEmptyFlag) != 0;
}
static void mcux_lpsci_poll_out(struct device *dev, unsigned char c)
{
const struct mcux_lpsci_config *config = dev->config->config_info;
while (!(LPSCI_GetStatusFlags(config->base)
& kLPSCI_TxDataRegEmptyFlag))
;
LPSCI_WriteByte(config->base, c);
}
static int mcux_lpsci_poll_in(struct device *dev, unsigned char *c)
{
const struct mcux_lpsci_config *config = dev->config->config_info;
u32_t flags = LPSCI_GetStatusFlags(config->base);
int ret = -1;
if (flags & kLPSCI_RxDataRegFullFlag) {
*c = LPSCI_ReadByte(config->base);
ret = 0;
}
return ret;
}
static int mcux_lpsci_fifo_read(struct device *dev, u8_t *rx_data,
const int len)
{
const struct mcux_lpsci_config *config = dev->config->config_info;
u8_t num_rx = 0;
while ((len - num_rx > 0) &&
(LPSCI_GetStatusFlags(config->base)
& kLPSCI_RxDataRegFullFlag)) {
rx_data[num_rx++] = LPSCI_ReadByte(config->base);
}
return num_rx;
}
static int mcux_lpsci_fifo_fill(struct device *dev, const u8_t *tx_data,
int len)
{
const struct mcux_lpsci_config *config = dev->config->config_info;
u8_t num_tx = 0;
while ((len - num_tx > 0) &&
(LPSCI_GetStatusFlags(config->base)
& kLPSCI_TxDataRegEmptyFlag)) {
LPSCI_WriteByte(config->base, tx_data[num_tx++]);
}
return num_tx;
}
static int mcux_lpsci_err_check(struct device *dev)
{
const struct mcux_lpsci_config *config = dev->config->config_info;
u32_t flags = LPSCI_GetStatusFlags(config->base);
int err = 0;
if (flags & kLPSCI_RxOverrunFlag) {
err |= UART_ERROR_OVERRUN;
}
if (flags & kLPSCI_ParityErrorFlag) {
err |= UART_ERROR_PARITY;
}
if (flags & kLPSCI_FramingErrorFlag) {
err |= UART_ERROR_FRAMING;
}
LPSCI_ClearStatusFlags(config->base, kLPSCI_RxOverrunFlag |
kLPSCI_ParityErrorFlag |
kLPSCI_FramingErrorFlag);
return err;
}
