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nrf5/spi: Adding multiple instances of machine SPI depending on which chip is targeted (nrf51/nrf52832/nrf52540). Updating board config requirement to give variable name of const pointer to Pin instead of a Pin name. Adding support of giving keyword set mosi/miso/clk pin through constructor.

This commit is contained in:
Glenn Ruben Bakke 2017-01-26 21:27:59 +01:00
parent 437f3d2477
commit 8653ac9ef8
1 changed files with 56 additions and 27 deletions
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83
nrf5/spi.c
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@ -63,24 +63,41 @@
/// spi.send_recv(b'1234', buf) # send 4 bytes and receive 4 into buf
/// spi.send_recv(buf, buf) # send/recv 4 bytes from/to buf
#if defined(MICROPY_HW_SPI0_SCK)
SPI_HandleTypeDef SPIHandle0 = {.instance = NULL};
#endif
SPI_HandleTypeDef SPIHandle1 = {.instance = NULL};
#if NRF52
SPI_HandleTypeDef SPIHandle2 = {.instance = NULL};
#if NRF52840_XXAA
SPI_HandleTypeDef SPIHandle3 = {.instance = NULL}; // 32 Mbs master only
#endif // NRF52840_XXAA
#endif // NRF52
STATIC const pyb_spi_obj_t machine_spi_obj[] = {
#if defined(MICROPY_HW_SPI0_SCK)
{{&machine_hard_spi_type}, &SPIHandle0},
#else
{{&machine_hard_spi_type}, NULL},
#endif
{{&machine_hard_spi_type}, &SPIHandle1},
#if NRF52
{{&machine_hard_spi_type}, &SPIHandle2},
#if NRF52840_XXAA
{{&machine_hard_spi_type}, &SPIHandle3},
#endif // NRF52840_XXAA
#endif // NRF52
};
void spi_init0(void) {
// reset the SPI handles
#if defined(MICROPY_HW_SPI0_SCK)
memset(&SPIHandle0, 0, sizeof(SPI_HandleTypeDef));
SPIHandle0.instance = SPI0;
#endif
SPIHandle0.instance = SPI_BASE(0);
memset(&SPIHandle1, 0, sizeof(SPI_HandleTypeDef));
SPIHandle1.instance = SPI_BASE(1);
#if NRF52
memset(&SPIHandle2, 0, sizeof(SPI_HandleTypeDef));
SPIHandle2.instance = SPI_BASE(2);
#if NRF52840_XXAA
memset(&SPIHandle3, 0, sizeof(SPI_HandleTypeDef));
SPIHandle3.instance = SPI_BASE(3);
#endif // NRF52840_XXAA
#endif // NRF52
}
STATIC int spi_find(mp_obj_t id) {
@ -114,7 +131,7 @@ void spi_deinit(SPI_HandleTypeDef *spi) {
}
STATIC void spi_transfer(const pyb_spi_obj_t * self, size_t len, const void * src, void * dest) {
hal_spi_master_tx_rx(self->spi->instance, len, src, dest);
hal_spi_master_tx_rx(self->spi->instance, len, src, dest);
}
STATIC void spi_print(const mp_print_t *print, SPI_HandleTypeDef *spi, bool legacy) {
@ -231,6 +248,13 @@ STATIC MP_DEFINE_CONST_DICT(machine_spi_locals_dict, machine_spi_locals_dict_tab
STATIC const machine_hard_spi_obj_t machine_hard_spi_obj[] = {
{{&machine_hard_spi_type}, &machine_spi_obj[0]},
{{&machine_hard_spi_type}, &machine_spi_obj[1]},
#if NRF52
{{&machine_hard_spi_type}, &machine_spi_obj[2]},
#if NRF52840_XXAA
{{&machine_hard_spi_type}, &machine_spi_obj[3]},
#endif
#endif
};
STATIC void machine_hard_spi_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
@ -248,34 +272,39 @@ STATIC mp_obj_t machine_hard_spi_make_new(mp_arg_val_t *args) {
&& args[ARG_NEW_mosi].u_obj != MP_OBJ_NULL
&& args[ARG_NEW_miso].u_obj != MP_OBJ_NULL) {
self->pyb->spi->init.clk_pin = mp_obj_get_int(args[ARG_NEW_sck].u_obj);
self->pyb->spi->init.mosi_pin = mp_obj_get_int(args[ARG_NEW_mosi].u_obj);
self->pyb->spi->init.miso_pin = mp_obj_get_int(args[ARG_NEW_miso].u_obj);
self->pyb->spi->init.clk_pin = args[ARG_NEW_sck].u_obj;
self->pyb->spi->init.mosi_pin = args[ARG_NEW_mosi].u_obj;
self->pyb->spi->init.miso_pin = args[ARG_NEW_miso].u_obj;
} else {
self->pyb->spi->init.clk_pin = MICROPY_HW_SPI0_SCK;
self->pyb->spi->init.mosi_pin = MICROPY_HW_SPI0_MOSI;
self->pyb->spi->init.miso_pin = MICROPY_HW_SPI0_MISO;
self->pyb->spi->init.clk_pin_port = MICROPY_HW_SPI0_SCK_PORT;
self->pyb->spi->init.mosi_pin_port = MICROPY_HW_SPI0_MOSI_PORT;
self->pyb->spi->init.miso_pin_port = MICROPY_HW_SPI0_MISO_PORT;
self->pyb->spi->init.clk_pin = &MICROPY_HW_SPI0_SCK;
self->pyb->spi->init.mosi_pin = &MICROPY_HW_SPI0_MOSI;
self->pyb->spi->init.miso_pin = &MICROPY_HW_SPI0_MISO;
}
int baudrate = args[ARG_NEW_baudrate].u_int;
if (baudrate <= 125000) {
self->pyb->spi->init.freq = HAL_FREQ_125_Kbps;
self->pyb->spi->init.freq = HAL_SPI_FREQ_125_Kbps;
} else if (baudrate <= 250000) {
self->pyb->spi->init.freq = HAL_FREQ_250_Kbps;
self->pyb->spi->init.freq = HAL_SPI_FREQ_250_Kbps;
} else if (baudrate <= 500000) {
self->pyb->spi->init.freq = HAL_FREQ_500_Kbps;
self->pyb->spi->init.freq = HAL_SPI_FREQ_500_Kbps;
} else if (baudrate <= 1000000) {
self->pyb->spi->init.freq = HAL_FREQ_1_Mbps;
self->pyb->spi->init.freq = HAL_SPI_FREQ_1_Mbps;
} else if (baudrate <= 2000000) {
self->pyb->spi->init.freq = HAL_FREQ_2_Mbps;
self->pyb->spi->init.freq = HAL_SPI_FREQ_2_Mbps;
} else if (baudrate <= 4000000) {
self->pyb->spi->init.freq = HAL_FREQ_4_Mbps;
} else {
self->pyb->spi->init.freq = HAL_FREQ_8_Mbps;
self->pyb->spi->init.freq = HAL_SPI_FREQ_4_Mbps;
} else if (baudrate <= 8000000) {
self->pyb->spi->init.freq = HAL_SPI_FREQ_8_Mbps;
#if NRF52840_XXAA
} else if (baudrate <= 16000000) {
self->pyb->spi->init.freq = HAL_SPI_FREQ_16_Mbps;
} else if (baudrate <= 32000000) {
self->pyb->spi->init.freq = HAL_SPI_FREQ_32_Mbps;
#endif
} else { // Default
self->pyb->spi->init.freq = HAL_SPI_FREQ_1_Mbps;
}
self->pyb->spi->init.irq_priority = 4;