gex/gex-core
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

some drying things up (GPIO init in particular)

Browse Source
This commit is contained in:
MightyPork
2018-01-06 19:17:25 +01:00
parent 6756b79ef4
commit 6406475f48
6 changed files with 79 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files
units/spi/unit_spi.c
+12 -61
View File
@@ -25,12 +25,7 @@ struct priv {
uint16_t ssn_pins; //!< SSN pin mask
SPI_TypeDef *periph;
GPIO_TypeDef *ssn_port;
GPIO_TypeDef *spi_port;
uint32_t ll_pin_miso;
uint32_t ll_pin_mosi;
uint32_t ll_pin_sck;
};
// ------------------------------------------------------------------------
@@ -291,34 +286,13 @@ static error_t USPI_init(Unit *unit)
#endif
// first, we have to claim the pins
Resource r_mosi = pin2resource(spi_portname, pin_mosi, &suc);
Resource r_miso = pin2resource(spi_portname, pin_miso, &suc);
Resource r_sck = pin2resource(spi_portname, pin_sck, &suc);
if (!suc) return E_BAD_CONFIG;
TRY(rsc_claim_pin(unit, spi_portname, pin_mosi));
TRY(rsc_claim_pin(unit, spi_portname, pin_miso));
TRY(rsc_claim_pin(unit, spi_portname, pin_sck));
TRY(rsc_claim(unit, r_mosi));
TRY(rsc_claim(unit, r_miso));
TRY(rsc_claim(unit, r_sck));
priv->spi_port = port2periph(spi_portname, &suc);
priv->ll_pin_mosi = pin2ll(pin_mosi, &suc);
priv->ll_pin_miso = pin2ll(pin_miso, &suc);
priv->ll_pin_sck = pin2ll(pin_sck, &suc);
if (!suc) return E_BAD_CONFIG;
// configure AF
if (pin_mosi < 8) LL_GPIO_SetAFPin_0_7(priv->spi_port, priv->ll_pin_mosi, af_spi);
else LL_GPIO_SetAFPin_8_15(priv->spi_port, priv->ll_pin_mosi, af_spi);
if (pin_miso < 8) LL_GPIO_SetAFPin_0_7(priv->spi_port, priv->ll_pin_miso, af_spi);
else LL_GPIO_SetAFPin_8_15(priv->spi_port, priv->ll_pin_miso, af_spi);
if (pin_sck < 8) LL_GPIO_SetAFPin_0_7(priv->spi_port, priv->ll_pin_sck, af_spi);
else LL_GPIO_SetAFPin_8_15(priv->spi_port, priv->ll_pin_sck, af_spi);
LL_GPIO_SetPinMode(priv->spi_port, priv->ll_pin_mosi, LL_GPIO_MODE_ALTERNATE);
LL_GPIO_SetPinMode(priv->spi_port, priv->ll_pin_miso, LL_GPIO_MODE_ALTERNATE);
LL_GPIO_SetPinMode(priv->spi_port, priv->ll_pin_sck, LL_GPIO_MODE_ALTERNATE);
configure_gpio_alternate(spi_portname, pin_mosi, af_spi);
configure_gpio_alternate(spi_portname, pin_miso, af_spi);
configure_gpio_alternate(spi_portname, pin_sck, af_spi);
if (priv->periph_num == 1) {
__HAL_RCC_SPI1_CLK_ENABLE();
@@ -328,22 +302,10 @@ static error_t USPI_init(Unit *unit)
// configure SSN GPIOs
{
priv->ssn_port = port2periph(priv->ssn_port_name, &suc);
if (!suc) return E_BAD_CONFIG;
// Claim all needed pins
TRY(rsc_claim_gpios(unit, priv->ssn_port_name, priv->ssn_pins));
uint16_t mask = 1;
for (int i = 0; i < 16; i++, mask <<= 1) {
if (priv->ssn_pins & mask) {
uint32_t ll_pin = pin2ll((uint8_t) i, &suc);
LL_GPIO_SetPinMode(priv->ssn_port, ll_pin, LL_GPIO_MODE_OUTPUT);
LL_GPIO_SetPinOutputType(priv->ssn_port, ll_pin, LL_GPIO_OUTPUT_PUSHPULL);
LL_GPIO_SetPinSpeed(priv->ssn_port, ll_pin, LL_GPIO_SPEED_FREQ_HIGH);
}
}
TRY(configure_sparse_pins(priv->ssn_port_name, priv->ssn_pins, &priv->ssn_port,
LL_GPIO_MODE_OUTPUT, LL_GPIO_OUTPUT_PUSHPULL));
// Set the initial state - all high
priv->ssn_port->ODR &= priv->ssn_pins;
}
@@ -359,21 +321,10 @@ static error_t USPI_init(Unit *unit)
dbg("Presc is %d", (int) presc);
LL_SPI_SetBaudRatePrescaler(priv->periph, presc);
LL_SPI_SetClockPolarity(priv->periph, priv->cpol ?
LL_SPI_POLARITY_HIGH :
LL_SPI_POLARITY_LOW);
LL_SPI_SetClockPhase(priv->periph, priv->cpha ?
LL_SPI_PHASE_1EDGE :
LL_SPI_PHASE_2EDGE);
LL_SPI_SetTransferDirection(priv->periph, priv->tx_only ?
LL_SPI_HALF_DUPLEX_TX :
LL_SPI_FULL_DUPLEX);
LL_SPI_SetTransferBitOrder(priv->periph, priv->lsb_first ?
LL_SPI_LSB_FIRST :
LL_SPI_MSB_FIRST);
LL_SPI_SetClockPolarity(priv->periph, priv->cpol ? LL_SPI_POLARITY_HIGH : LL_SPI_POLARITY_LOW);
LL_SPI_SetClockPhase(priv->periph, priv->cpha ? LL_SPI_PHASE_1EDGE : LL_SPI_PHASE_2EDGE);
LL_SPI_SetTransferDirection(priv->periph, priv->tx_only ? LL_SPI_HALF_DUPLEX_TX : LL_SPI_FULL_DUPLEX);
LL_SPI_SetTransferBitOrder(priv->periph, priv->lsb_first ? LL_SPI_LSB_FIRST : LL_SPI_MSB_FIRST);
// TODO data size?