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-rw-r--r--esp8266/machine_hspi.c179
1 files changed, 0 insertions, 179 deletions
diff --git a/esp8266/machine_hspi.c b/esp8266/machine_hspi.c
deleted file mode 100644
index eaabbab7ea..0000000000
--- a/esp8266/machine_hspi.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * This file is part of the MicroPython project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2016 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include <stdio.h>
-#include <stdint.h>
-#include <string.h>
-
-#include "ets_sys.h"
-#include "etshal.h"
-#include "ets_alt_task.h"
-
-#include "py/runtime.h"
-#include "py/stream.h"
-#include "py/mphal.h"
-#include "extmod/machine_spi.h"
-#include "modmachine.h"
-#include "hspi.h"
-
-typedef struct _machine_hspi_obj_t {
- mp_obj_base_t base;
- uint32_t baudrate;
- uint8_t polarity;
- uint8_t phase;
-} machine_hspi_obj_t;
-
-STATIC void machine_hspi_transfer(mp_obj_base_t *self_in, size_t len, const uint8_t *src, uint8_t *dest) {
- (void)self_in;
-
- if (dest == NULL) {
- // fast case when we only need to write data
- size_t chunk_size = 1024;
- size_t count = len / chunk_size;
- size_t i = 0;
- for (size_t j = 0; j < count; ++j) {
- for (size_t k = 0; k < chunk_size; ++k) {
- spi_tx8fast(HSPI, src[i]);
- ++i;
- }
- ets_loop_iter();
- }
- while (i < len) {
- spi_tx8fast(HSPI, src[i]);
- ++i;
- }
- } else {
- // we need to read and write data
-
- // Process data in chunks, let the pending tasks run in between
- size_t chunk_size = 1024; // TODO this should depend on baudrate
- size_t count = len / chunk_size;
- size_t i = 0;
- for (size_t j = 0; j < count; ++j) {
- for (size_t k = 0; k < chunk_size; ++k) {
- dest[i] = spi_transaction(HSPI, 0, 0, 0, 0, 8, src[i], 8, 0);
- ++i;
- }
- ets_loop_iter();
- }
- while (i < len) {
- dest[i] = spi_transaction(HSPI, 0, 0, 0, 0, 8, src[i], 8, 0);
- ++i;
- }
- }
-}
-
-/******************************************************************************/
-// MicroPython bindings for HSPI
-
-STATIC void machine_hspi_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
- machine_hspi_obj_t *self = MP_OBJ_TO_PTR(self_in);
- mp_printf(print, "HSPI(id=1, baudrate=%u, polarity=%u, phase=%u)",
- self->baudrate, self->polarity, self->phase);
-}
-
-STATIC void machine_hspi_init(mp_obj_base_t *self_in, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
- machine_hspi_obj_t *self = (machine_hspi_obj_t*)self_in;
-
- enum { ARG_baudrate, ARG_polarity, ARG_phase };
- static const mp_arg_t allowed_args[] = {
- { MP_QSTR_baudrate, MP_ARG_INT, {.u_int = -1} },
- { MP_QSTR_polarity, MP_ARG_INT, {.u_int = -1} },
- { MP_QSTR_phase, MP_ARG_INT, {.u_int = -1} },
- };
- mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
- mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args),
- allowed_args, args);
-
- if (args[ARG_baudrate].u_int != -1) {
- self->baudrate = args[ARG_baudrate].u_int;
- }
- if (args[ARG_polarity].u_int != -1) {
- self->polarity = args[ARG_polarity].u_int;
- }
- if (args[ARG_phase].u_int != -1) {
- self->phase = args[ARG_phase].u_int;
- }
- if (self->baudrate == 80000000L) {
- // Special case for full speed.
- spi_init_gpio(HSPI, SPI_CLK_80MHZ_NODIV);
- spi_clock(HSPI, 0, 0);
- } else if (self->baudrate > 40000000L) {
- mp_raise_ValueError("impossible baudrate");
- } else {
- uint32_t divider = 40000000L / self->baudrate;
- uint16_t prediv = MIN(divider, SPI_CLKDIV_PRE + 1);
- uint16_t cntdiv = (divider / prediv) * 2; // cntdiv has to be even
- if (cntdiv > SPI_CLKCNT_N + 1 || cntdiv == 0 || prediv == 0) {
- mp_raise_ValueError("impossible baudrate");
- }
- self->baudrate = 80000000L / (prediv * cntdiv);
- spi_init_gpio(HSPI, SPI_CLK_USE_DIV);
- spi_clock(HSPI, prediv, cntdiv);
- }
- // TODO: Make the byte order configurable too (discuss param names)
- spi_tx_byte_order(HSPI, SPI_BYTE_ORDER_HIGH_TO_LOW);
- spi_rx_byte_order(HSPI, SPI_BYTE_ORDER_HIGH_TO_LOW);
- CLEAR_PERI_REG_MASK(SPI_USER(HSPI), SPI_FLASH_MODE | SPI_USR_MISO |
- SPI_USR_ADDR | SPI_USR_COMMAND | SPI_USR_DUMMY);
- // Clear Dual or Quad lines transmission mode
- CLEAR_PERI_REG_MASK(SPI_CTRL(HSPI), SPI_QIO_MODE | SPI_DIO_MODE |
- SPI_DOUT_MODE | SPI_QOUT_MODE);
- spi_mode(HSPI, self->phase, self->polarity);
-}
-
-mp_obj_t machine_hspi_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
- // args[0] holds the id of the peripheral
- if (args[0] != MP_OBJ_NEW_SMALL_INT(1)) {
- // FlashROM is on SPI0, so far we don't support its usage
- mp_raise_ValueError("");
- }
-
- machine_hspi_obj_t *self = m_new_obj(machine_hspi_obj_t);
- self->base.type = &machine_hspi_type;
- // set defaults
- self->baudrate = 80000000L;
- self->polarity = 0;
- self->phase = 0;
- mp_map_t kw_args;
- mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
- machine_hspi_init((mp_obj_base_t*)self, n_args - 1, args + 1, &kw_args);
- return MP_OBJ_FROM_PTR(self);
-}
-
-STATIC const mp_machine_spi_p_t machine_hspi_p = {
- .init = machine_hspi_init,
- .transfer = machine_hspi_transfer,
-};
-
-const mp_obj_type_t machine_hspi_type = {
- { &mp_type_type },
- .name = MP_QSTR_HSPI,
- .print = machine_hspi_print,
- .make_new = mp_machine_spi_make_new, // delegate to master constructor
- .protocol = &machine_hspi_p,
- .locals_dict = (mp_obj_dict_t*)&mp_machine_spi_locals_dict,
-};
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