change half_duplex to be on spi construct
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4110b44b8a
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3b418dbddc
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@ -171,7 +171,7 @@ STATIC int check_pins(busio_spi_obj_t *self,
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void common_hal_busio_spi_construct(busio_spi_obj_t *self,
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const mcu_pin_obj_t *sck, const mcu_pin_obj_t *mosi,
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const mcu_pin_obj_t *miso) {
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const mcu_pin_obj_t *miso, bool half_duplex) {
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int periph_index = check_pins(self, sck, mosi, miso);
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SPI_TypeDef *SPIx = mcu_spi_banks[periph_index - 1];
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@ -208,12 +208,11 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
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self->handle.Instance = SPIx;
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self->handle.Init.Mode = SPI_MODE_MASTER;
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if (self->mosi == NULL && self->miso != NULL) {
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self->handle.Init.Direction = SPI_DIRECTION_2LINES_RXONLY;
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} else if (self->mosi != NULL && self->miso == NULL) {
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// Direction change only required for RX-only, see RefMan RM0090:884
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if (half_duplex == true) {
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self->handle.Init.Direction = SPI_DIRECTION_1LINE;
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} else if (self->mosi != NULL && self->miso != NULL) {
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self->handle.Init.Direction = SPI_DIRECTION_2LINES;
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} else {
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self->handle.Init.Direction = (self->mosi == NULL) ? SPI_DIRECTION_2LINES_RXONLY : SPI_DIRECTION_2LINES;
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}
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self->handle.Init.DataSize = SPI_DATASIZE_8BIT;
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self->handle.Init.CLKPolarity = SPI_POLARITY_LOW;
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@ -229,6 +228,7 @@ void common_hal_busio_spi_construct(busio_spi_obj_t *self,
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}
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self->baudrate = (get_busclock(SPIx) / 16);
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self->prescaler = 16;
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self->half_duplex = half_duplex;
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self->polarity = 0;
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self->phase = 0;
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self->bits = 8;
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@ -345,11 +345,15 @@ bool common_hal_busio_spi_write(busio_spi_obj_t *self,
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bool common_hal_busio_spi_read(busio_spi_obj_t *self,
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uint8_t *data, size_t len, uint8_t write_value) {
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if (self->miso == NULL && self->half_duplex == false) {
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mp_raise_ValueError(translate("No MISO Pin"));
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} else if (self->half_duplex == true && self->mosi == NULL) {
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mp_raise_ValueError(translate("No MOSI Pin"));
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}
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HAL_StatusTypeDef result = HAL_OK;
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// If in modes SPI_DIRECTION_2LINES_RXONLY or SPI_DIRECTION_1LINE
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if ((self->mosi == NULL && self->miso != NULL) || (self->mosi != NULL && self->miso == NULL)) {
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if ((self->half_duplex == false && self->mosi == NULL) || (self->half_duplex == true && self->mosi != NULL && self->miso == NULL)) {
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result = HAL_SPI_Receive(&self->handle, data, (uint16_t)len, HAL_MAX_DELAY);
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} else { // Else SPI_DIRECTION_2LINES
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} else {
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memset(data, write_value, len);
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result = HAL_SPI_TransmitReceive(&self->handle, data, data, (uint16_t)len, HAL_MAX_DELAY);
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}
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@ -44,6 +44,7 @@ typedef struct {
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const mcu_periph_obj_t *nss;
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uint32_t baudrate;
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uint16_t prescaler;
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bool half_duplex;
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uint8_t polarity;
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uint8_t phase;
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uint8_t bits;
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@ -74,7 +74,8 @@
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//|
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//| :param ~microcontroller.Pin clock: the pin to use for the clock.
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//| :param ~microcontroller.Pin MOSI: the Main Out Selected In pin.
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//| :param ~microcontroller.Pin MISO: the Main In Selected Out pin."""
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//| :param ~microcontroller.Pin MISO: the Main In Selected Out pin.
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//| :param bool half_duplex: True when MOSI is used for bidirectional data. False when SPI is full-duplex or simplex."""
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//| ...
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//|
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@ -84,11 +85,12 @@ STATIC mp_obj_t busio_spi_make_new(const mp_obj_type_t *type, size_t n_args, siz
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#if CIRCUITPY_BUSIO_SPI
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busio_spi_obj_t *self = m_new_obj(busio_spi_obj_t);
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self->base.type = &busio_spi_type;
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enum { ARG_clock, ARG_MOSI, ARG_MISO };
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enum { ARG_clock, ARG_MOSI, ARG_MISO, ARG_half_duplex };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_clock, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_MOSI, MP_ARG_OBJ, {.u_obj = mp_const_none} },
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{ MP_QSTR_MISO, MP_ARG_OBJ, {.u_obj = mp_const_none} },
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{ MP_QSTR_half_duplex, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_bool = false} },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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@ -101,7 +103,7 @@ STATIC mp_obj_t busio_spi_make_new(const mp_obj_type_t *type, size_t n_args, siz
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mp_raise_ValueError(translate("Must provide MISO or MOSI pin"));
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}
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common_hal_busio_spi_construct(self, clock, mosi, miso);
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common_hal_busio_spi_construct(self, clock, mosi, miso, args[ARG_half_duplex].u_bool);
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return MP_OBJ_FROM_PTR(self);
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#else
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mp_raise_ValueError(translate("Invalid pins"));
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@ -38,7 +38,7 @@ extern const mp_obj_type_t busio_spi_type;
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// Construct an underlying SPI object.
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extern void common_hal_busio_spi_construct(busio_spi_obj_t *self,
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const mcu_pin_obj_t *clock, const mcu_pin_obj_t *mosi,
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const mcu_pin_obj_t *miso);
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const mcu_pin_obj_t *miso, bool half_duplex);
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extern void common_hal_busio_spi_deinit(busio_spi_obj_t *self);
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extern bool common_hal_busio_spi_deinited(busio_spi_obj_t *self);
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@ -131,7 +131,7 @@ mp_obj_t common_hal_board_create_spi(const mp_int_t instance) {
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assert_pin_free(spi_pin[instance].mosi);
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assert_pin_free(spi_pin[instance].miso);
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common_hal_busio_spi_construct(self, spi_pin[instance].clock, spi_pin[instance].mosi, spi_pin[instance].miso);
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common_hal_busio_spi_construct(self, spi_pin[instance].clock, spi_pin[instance].mosi, spi_pin[instance].miso, false);
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spi_obj_created[instance] = true;
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return &spi_obj[instance];
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@ -149,7 +149,7 @@ void spi_flash_init(void) {
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common_hal_digitalio_digitalinout_never_reset(&cs_pin);
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supervisor_flash_spi_bus.base.type = &busio_spi_type;
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common_hal_busio_spi_construct(&supervisor_flash_spi_bus, SPI_FLASH_SCK_PIN, SPI_FLASH_MOSI_PIN, SPI_FLASH_MISO_PIN);
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common_hal_busio_spi_construct(&supervisor_flash_spi_bus, SPI_FLASH_SCK_PIN, SPI_FLASH_MOSI_PIN, SPI_FLASH_MISO_PIN, false);
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common_hal_busio_spi_never_reset(&supervisor_flash_spi_bus);
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return;
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@ -163,7 +163,8 @@ void status_led_init() {
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common_hal_busio_spi_construct(&status_apa102,
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MICROPY_HW_APA102_SCK,
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MICROPY_HW_APA102_MOSI,
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NULL);
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NULL,
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false);
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#endif
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#if CIRCUITPY_BITBANG_APA102
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shared_module_bitbangio_spi_try_lock(&status_apa102);
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