53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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#include "SpiBus.h"
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#include "SpiBusConfig.h"
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#include "SpiCallback.h"
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SpiBus::SpiBus(const std::string& _id, spi_host_device_t _host_device)
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: id(_id)
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, host_device(_host_device)
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, cur_config(nullptr)
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{
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spi_bus_config_t bus_config {
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.mosi_io_num = -1,
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.miso_io_num = -1,
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.sclk_io_num = -1,
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.quadwp_io_num = -1,
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.quadhd_io_num = -1,
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.data4_io_num = -1,
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.data5_io_num = -1,
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.data6_io_num = -1,
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.data7_io_num = -1,
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.max_transfer_sz = SPI_MAX_DMA_LEN,
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.flags = 0,
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.intr_flags = 0
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};
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ESP_ERROR_CHECK(spi_bus_initialize(host_device, &bus_config, SPI_DMA_CH_AUTO));
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}
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SpiBus::~SpiBus()
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{
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ESP_ERROR_CHECK(spi_bus_free(host_device));
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}
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spi_device_handle_t SpiBus::add_device(const std::shared_ptr<SpiBusConfig>& bus_config, spi_device_interface_config_t& device_config)
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{
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if (!SpiCallback::patch(shared_from_this(), bus_config, device_config))
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return nullptr;
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spi_device_handle_t device;
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ESP_ERROR_CHECK(spi_bus_add_device(host_device, &device_config, &device));
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return device;
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}
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// TODO: add remove_device (with spi_device_acquire_bus)
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void SpiBus::apply_config(SpiBusConfig* config)
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{
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if (cur_config)
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cur_config->unpatch(host_device);
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cur_config = config;
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if (cur_config)
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cur_config->patch(host_device);
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}
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