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hardware flow control from nRF51

This commit is contained in:
Stephane D'Alu 2016-02-02 13:34:47 +01:00
parent a8592bb3b1
commit 137836fb19
2 changed files with 45 additions and 7 deletions
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38
os/hal/ports/NRF51/NRF51822/serial_lld.c
View File

@ -49,9 +49,13 @@ SerialDriver SD1;
* @brief Driver default configuration.
*/
static const SerialConfig default_config = {
.speed = 38400,
.tx_pad = NRF51_SERIAL_PAD_DISCONNECTED,
.rx_pad = NRF51_SERIAL_PAD_DISCONNECTED,
.speed = 38400,
.tx_pad = NRF51_SERIAL_PAD_DISCONNECTED,
.rx_pad = NRF51_SERIAL_PAD_DISCONNECTED,
#if (NRF51_SERIAL_USE_HWFLOWCTRL == TRUE)
.rts_pad = NRF51_SERIAL_PAD_DISCONNECTED,
.cts_pad = NRF51_SERIAL_PAD_DISCONNECTED,
#endif
};
/*===========================================================================*/
@ -68,7 +72,6 @@ static const SerialConfig default_config = {
*/
static void configure_uart(const SerialConfig *config)
{
/* TODO: Add support for CTS/RTS! */
uint32_t speed = UART_BAUDRATE_BAUDRATE_Baud250000;
switch (config->speed) {
@ -100,6 +103,16 @@ static void configure_uart(const SerialConfig *config)
palSetPadMode(IOPORT1, config->rx_pad, PAL_MODE_INPUT);
NRF_UART0->PSELRXD = config->rx_pad;
}
#if (NRF51_SERIAL_USE_HWFLOWCTRL == TRUE)
if (config->rts_pad != NRF51_SERIAL_PAD_DISCONNECTED) {
palSetPadMode(IOPORT1, config->rts_pad, PAL_MODE_OUTPUT_PUSHPULL);
NRF_UART0->PSELRTS = config->rts_pad;
}
if (config->cts_pad != NRF51_SERIAL_PAD_DISCONNECTED) {
palSetPadMode(IOPORT1, config->cts_pad, PAL_MODE_INPUT);
NRF_UART0->PSELCTS = config->cts_pad;
}
#endif
NRF_UART0->BAUDRATE = speed;
NRF_UART0->CONFIG = (UART_CONFIG_PARITY_Excluded << UART_CONFIG_PARITY_Pos);
@ -107,10 +120,21 @@ static void configure_uart(const SerialConfig *config)
NRF_UART0->EVENTS_RXDRDY = 0;
NRF_UART0->EVENTS_TXDRDY = 0;
NRF_UART0->CONFIG &= ~(UART_CONFIG_HWFC_Enabled << UART_CONFIG_HWFC_Pos);
#if (NRF51_SERIAL_USE_HWFLOWCTRL == TRUE)
if ((config->rts_pad < TOTAL_GPIO_PADS) ||
(config->cts_pad < TOTAL_GPIO_PADS)) {
NRF_UART0->CONFIG |= UART_CONFIG_HWFC_Enabled << UART_CONFIG_HWFC_Pos;
} else {
NRF_UART0->CONFIG &= ~(UART_CONFIG_HWFC_Enabled << UART_CONFIG_HWFC_Pos);
}
NRF_UART0->PSELRTS = config->rts_pad;
NRF_UART0->PSELCTS = config->cts_pad;
#else
NRF_UART0->CONFIG &= ~(UART_CONFIG_HWFC_Enabled << UART_CONFIG_HWFC_Pos);
NRF_UART0->PSELRTS = NRF51_SERIAL_PAD_DISCONNECTED;
NRF_UART0->PSELCTS = NRF51_SERIAL_PAD_DISCONNECTED;
NRF_UART0->PSELRTS = NRF51_SERIAL_PAD_DISCONNECTED;
NRF_UART0->PSELCTS = NRF51_SERIAL_PAD_DISCONNECTED;
#endif
if (config->rx_pad != NRF51_SERIAL_PAD_DISCONNECTED) {
while (NRF_UART0->EVENTS_RXDRDY != 0) {

14
os/hal/ports/NRF51/NRF51822/serial_lld.h
View File

@ -39,6 +39,16 @@
* @name PLATFORM configuration options
* @{
*/
/**
* @brief SD flow control enable switch.
* @details If set to @p TRUE the support for hardware flow control
* is included.
* @note The default is @p FALSE.
*/
#if !defined(NRF51_SERIAL_USE_HWFLOWCTRL) || defined(__DOXYGEN__)
#define NRF51_SERIAL_USE_HWFLOWCTRL FALSE
#endif
/**
* @brief SD1 driver enable switch.
* @details If set to @p TRUE the support for SD1 is included.
@ -85,6 +95,10 @@ typedef struct {
/* End of the mandatory fields.*/
uint32_t tx_pad;
uint32_t rx_pad;
#if (NRF51_SERIAL_USE_HWFLOWCTRL == TRUE)
uint32_t rts_pad;
uint32_t cts_pad;
#endif
} SerialConfig;
/**