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Shelly dimmer: Use unique_ptr to handle the lifetime of stm32_t (#3400)

Browse source 
Co-authored-by: Martin <25747549+martgras@users.noreply.github.com>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
Niclas Larsson 2022-05-12 00:26:51 +02:00 committed by Jesse Hills
parent 63096ac2bc
commit 40f622949e
No known key found for this signature in database
GPG key ID: BEAAE804EFD8E83A
3 changed files with 79 additions and 77 deletions
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9
esphome/components/shelly_dimmer/shelly_dimmer.cpp
View file

@ -158,11 +158,8 @@ bool ShellyDimmer::upgrade_firmware_() {
ESP_LOGW(TAG, "Starting STM32 firmware upgrade");
this->reset_dfu_boot_();
// Could be constexpr in c++17
static const auto CLOSE = [](stm32_t *stm32) { stm32_close(stm32); };
// Cleanup with RAII
std::unique_ptr<stm32_t, decltype(CLOSE)> stm32{stm32_init(this, STREAM_SERIAL, 1), CLOSE};
auto stm32 = stm32_init(this, STREAM_SERIAL, 1);
if (!stm32) {
ESP_LOGW(TAG, "Failed to initialize STM32");
@ -170,7 +167,7 @@ bool ShellyDimmer::upgrade_firmware_() {
}
// Erase STM32 flash.
if (stm32_erase_memory(stm32.get(), 0, STM32_MASS_ERASE) != STM32_ERR_OK) {
if (stm32_erase_memory(stm32, 0, STM32_MASS_ERASE) != STM32_ERR_OK) {
ESP_LOGW(TAG, "Failed to erase STM32 flash memory");
return false;
}
@ -196,7 +193,7 @@ bool ShellyDimmer::upgrade_firmware_() {
std::memcpy(buffer, p, BUFFER_SIZE);
p += BUFFER_SIZE;
if (stm32_write_memory(stm32.get(), addr, buffer, len) != STM32_ERR_OK) {
if (stm32_write_memory(stm32, addr, buffer, len) != STM32_ERR_OK) {
ESP_LOGW(TAG, "Failed to write to STM32 flash memory");
return false;
}

119
esphome/components/shelly_dimmer/stm32flash.cpp
View file

@ -117,7 +117,7 @@ namespace shelly_dimmer {
namespace {
int flash_addr_to_page_ceil(const stm32_t *stm, uint32_t addr) {
int flash_addr_to_page_ceil(const stm32_unique_ptr &stm, uint32_t addr) {
if (!(addr >= stm->dev->fl_start && addr <= stm->dev->fl_end))
return 0;
@ -135,7 +135,7 @@ int flash_addr_to_page_ceil(const stm32_t *stm, uint32_t addr) {
return addr ? page + 1 : page;
}
stm32_err_t stm32_get_ack_timeout(const stm32_t *stm, uint32_t timeout) {
stm32_err_t stm32_get_ack_timeout(const stm32_unique_ptr &stm, uint32_t timeout) {
auto *stream = stm->stream;
uint8_t rxbyte;
@ -168,9 +168,9 @@ stm32_err_t stm32_get_ack_timeout(const stm32_t *stm, uint32_t timeout) {
} while (true);
}
stm32_err_t stm32_get_ack(const stm32_t *stm) { return stm32_get_ack_timeout(stm, 0); }
stm32_err_t stm32_get_ack(const stm32_unique_ptr &stm) { return stm32_get_ack_timeout(stm, 0); }
stm32_err_t stm32_send_command_timeout(const stm32_t *stm, const uint8_t cmd, const uint32_t timeout) {
stm32_err_t stm32_send_command_timeout(const stm32_unique_ptr &stm, const uint8_t cmd, const uint32_t timeout) {
auto *const stream = stm->stream;
static constexpr auto BUFFER_SIZE = 2;
@ -194,12 +194,12 @@ stm32_err_t stm32_send_command_timeout(const stm32_t *stm, const uint8_t cmd, co
return STM32_ERR_UNKNOWN;
}
stm32_err_t stm32_send_command(const stm32_t *stm, const uint8_t cmd) {
stm32_err_t stm32_send_command(const stm32_unique_ptr &stm, const uint8_t cmd) {
return stm32_send_command_timeout(stm, cmd, 0);
}
/* if we have lost sync, send a wrong command and expect a NACK */
stm32_err_t stm32_resync(const stm32_t *stm) {
stm32_err_t stm32_resync(const stm32_unique_ptr &stm) {
auto *const stream = stm->stream;
uint32_t t0 = millis();
auto t1 = t0;
@ -238,7 +238,7 @@ stm32_err_t stm32_resync(const stm32_t *stm) {
*
* len is value of the first byte in the frame.
*/
stm32_err_t stm32_guess_len_cmd(const stm32_t *stm, const uint8_t cmd, uint8_t *const data, unsigned int len) {
stm32_err_t stm32_guess_len_cmd(const stm32_unique_ptr &stm, const uint8_t cmd, uint8_t *const data, unsigned int len) {
auto *const stream = stm->stream;
if (stm32_send_command(stm, cmd) != STM32_ERR_OK)
@ -286,7 +286,7 @@ stm32_err_t stm32_guess_len_cmd(const stm32_t *stm, const uint8_t cmd, uint8_t *
* This function sends the init sequence and, in case of timeout, recovers
* the interface.
*/
stm32_err_t stm32_send_init_seq(const stm32_t *stm) {
stm32_err_t stm32_send_init_seq(const stm32_unique_ptr &stm) {
auto *const stream = stm->stream;
stream->write_array(&STM32_CMD_INIT, 1);
@ -320,7 +320,7 @@ stm32_err_t stm32_send_init_seq(const stm32_t *stm) {
return STM32_ERR_UNKNOWN;
}
stm32_err_t stm32_mass_erase(const stm32_t *stm) {
stm32_err_t stm32_mass_erase(const stm32_unique_ptr &stm) {
auto *const stream = stm->stream;
if (stm32_send_command(stm, stm->cmd->er) != STM32_ERR_OK) {
@ -364,7 +364,7 @@ template<typename T> std::unique_ptr<T[], void (*)(T *memory)> malloc_array_raii
DELETOR};
}
stm32_err_t stm32_pages_erase(const stm32_t *stm, const uint32_t spage, const uint32_t pages) {
stm32_err_t stm32_pages_erase(const stm32_unique_ptr &stm, const uint32_t spage, const uint32_t pages) {
auto *const stream = stm->stream;
uint8_t cs = 0;
int i = 0;
@ -474,6 +474,18 @@ template<size_t N> void populate_buffer_with_address(uint8_t (&buffer)[N], uint3
buffer[4] = static_cast<uint8_t>(buffer[0] ^ buffer[1] ^ buffer[2] ^ buffer[3]);
}
template<typename T> stm32_unique_ptr make_stm32_with_deletor(T ptr) {
static const auto CLOSE = [](stm32_t *stm32) {
if (stm32) {
free(stm32->cmd); // NOLINT
}
free(stm32); // NOLINT
};
// Cleanup with RAII
return std::unique_ptr<stm32_t, decltype(CLOSE)>{ptr, CLOSE};
}
} // Anonymous namespace
} // namespace shelly_dimmer
@ -485,48 +497,44 @@ namespace shelly_dimmer {
/* find newer command by higher code */
#define newer(prev, a) (((prev) == STM32_CMD_ERR) ? (a) : (((prev) > (a)) ? (prev) : (a)))
stm32_t *stm32_init(uart::UARTDevice *stream, const uint8_t flags, const char init) {
stm32_unique_ptr stm32_init(uart::UARTDevice *stream, const uint8_t flags, const char init) {
uint8_t buf[257];
// Could be constexpr in c++17
static const auto CLOSE = [](stm32_t *stm32) { stm32_close(stm32); };
// Cleanup with RAII
std::unique_ptr<stm32_t, decltype(CLOSE)> stm{static_cast<stm32_t *>(calloc(sizeof(stm32_t), 1)), // NOLINT
CLOSE};
auto stm = make_stm32_with_deletor(static_cast<stm32_t *>(calloc(sizeof(stm32_t), 1))); // NOLINT
if (!stm) {
return nullptr;
return make_stm32_with_deletor(nullptr);
}
stm->stream = stream;
stm->flags = flags;
stm->cmd = static_cast<stm32_cmd_t *>(malloc(sizeof(stm32_cmd_t))); // NOLINT
if (!stm->cmd) {
return nullptr;
return make_stm32_with_deletor(nullptr);
}
memset(stm->cmd, STM32_CMD_ERR, sizeof(stm32_cmd_t));
if ((stm->flags & STREAM_OPT_CMD_INIT) && init) {
if (stm32_send_init_seq(stm.get()) != STM32_ERR_OK)
return nullptr; // NOLINT
if (stm32_send_init_seq(stm) != STM32_ERR_OK)
return make_stm32_with_deletor(nullptr);
}
/* get the version and read protection status */
if (stm32_send_command(stm.get(), STM32_CMD_GVR) != STM32_ERR_OK) {
return nullptr; // NOLINT
if (stm32_send_command(stm, STM32_CMD_GVR) != STM32_ERR_OK) {
return make_stm32_with_deletor(nullptr);
}
/* From AN, only UART bootloader returns 3 bytes */
{
const auto len = (stm->flags & STREAM_OPT_GVR_ETX) ? 3 : 1;
if (!stream->read_array(buf, len))
return nullptr; // NOLINT
return make_stm32_with_deletor(nullptr);
stm->version = buf[0];
stm->option1 = (stm->flags & STREAM_OPT_GVR_ETX) ? buf[1] : 0;
stm->option2 = (stm->flags & STREAM_OPT_GVR_ETX) ? buf[2] : 0;
if (stm32_get_ack(stm.get()) != STM32_ERR_OK) {
return nullptr;
if (stm32_get_ack(stm) != STM32_ERR_OK) {
return make_stm32_with_deletor(nullptr);
}
}
@ -544,8 +552,8 @@ stm32_t *stm32_init(uart::UARTDevice *stream, const uint8_t flags, const char in
return STM32_CMD_GET_LENGTH;
})();
if (stm32_guess_len_cmd(stm.get(), STM32_CMD_GET, buf, len) != STM32_ERR_OK)
return nullptr;
if (stm32_guess_len_cmd(stm, STM32_CMD_GET, buf, len) != STM32_ERR_OK)
return make_stm32_with_deletor(nullptr);
}
const auto stop = buf[0] + 1;
@ -607,23 +615,23 @@ stm32_t *stm32_init(uart::UARTDevice *stream, const uint8_t flags, const char in
}
if (new_cmds)
ESP_LOGD(TAG, ")");
if (stm32_get_ack(stm.get()) != STM32_ERR_OK) {
return nullptr;
if (stm32_get_ack(stm) != STM32_ERR_OK) {
return make_stm32_with_deletor(nullptr);
}
if (stm->cmd->get == STM32_CMD_ERR || stm->cmd->gvr == STM32_CMD_ERR || stm->cmd->gid == STM32_CMD_ERR) {
ESP_LOGD(TAG, "Error: bootloader did not returned correct information from GET command");
return nullptr;
return make_stm32_with_deletor(nullptr);
}
/* get the device ID */
if (stm32_guess_len_cmd(stm.get(), stm->cmd->gid, buf, 1) != STM32_ERR_OK) {
return nullptr;
if (stm32_guess_len_cmd(stm, stm->cmd->gid, buf, 1) != STM32_ERR_OK) {
return make_stm32_with_deletor(nullptr);
}
const auto returned = buf[0] + 1;
if (returned < 2) {
ESP_LOGD(TAG, "Only %d bytes sent in the PID, unknown/unsupported device", returned);
return nullptr;
return make_stm32_with_deletor(nullptr);
}
stm->pid = (buf[1] << 8) | buf[2];
if (returned > 2) {
@ -631,8 +639,8 @@ stm32_t *stm32_init(uart::UARTDevice *stream, const uint8_t flags, const char in
for (auto i = 2; i <= returned; i++)
ESP_LOGD(TAG, " %02x", buf[i]);
}
if (stm32_get_ack(stm.get()) != STM32_ERR_OK) {
return nullptr;
if (stm32_get_ack(stm) != STM32_ERR_OK) {
return make_stm32_with_deletor(nullptr);
}
stm->dev = DEVICES;
@ -641,21 +649,14 @@ stm32_t *stm32_init(uart::UARTDevice *stream, const uint8_t flags, const char in
if (!stm->dev->id) {
ESP_LOGD(TAG, "Unknown/unsupported device (Device ID: 0x%03x)", stm->pid);
return nullptr;
return make_stm32_with_deletor(nullptr);
}
// TODO: Would be much better if the unique_ptr was returned from this function
// Release ownership of unique_ptr
return stm.release(); // NOLINT
return stm;
}
void stm32_close(stm32_t *stm) {
if (stm)
free(stm->cmd); // NOLINT
free(stm); // NOLINT
}
stm32_err_t stm32_read_memory(const stm32_t *stm, const uint32_t address, uint8_t *data, const unsigned int len) {
stm32_err_t stm32_read_memory(const stm32_unique_ptr &stm, const uint32_t address, uint8_t *data,
const unsigned int len) {
auto *const stream = stm->stream;
if (!len)
@ -693,7 +694,8 @@ stm32_err_t stm32_read_memory(const stm32_t *stm, const uint32_t address, uint8_
return STM32_ERR_OK;
}
stm32_err_t stm32_write_memory(const stm32_t *stm, uint32_t address, const uint8_t *data, const unsigned int len) {
stm32_err_t stm32_write_memory(const stm32_unique_ptr &stm, uint32_t address, const uint8_t *data,
const unsigned int len) {
auto *const stream = stm->stream;
if (!len)
@ -753,7 +755,7 @@ stm32_err_t stm32_write_memory(const stm32_t *stm, uint32_t address, const uint8
return STM32_ERR_OK;
}
stm32_err_t stm32_wunprot_memory(const stm32_t *stm) {
stm32_err_t stm32_wunprot_memory(const stm32_unique_ptr &stm) {
if (stm->cmd->uw == STM32_CMD_ERR) {
ESP_LOGD(TAG, "Error: WRITE UNPROTECT command not implemented in bootloader.");
return STM32_ERR_NO_CMD;
@ -766,7 +768,7 @@ stm32_err_t stm32_wunprot_memory(const stm32_t *stm) {
[]() { ESP_LOGD(TAG, "Error: Failed to WRITE UNPROTECT"); });
}
stm32_err_t stm32_wprot_memory(const stm32_t *stm) {
stm32_err_t stm32_wprot_memory(const stm32_unique_ptr &stm) {
if (stm->cmd->wp == STM32_CMD_ERR) {
ESP_LOGD(TAG, "Error: WRITE PROTECT command not implemented in bootloader.");
return STM32_ERR_NO_CMD;
@ -779,7 +781,7 @@ stm32_err_t stm32_wprot_memory(const stm32_t *stm) {
[]() { ESP_LOGD(TAG, "Error: Failed to WRITE PROTECT"); });
}
stm32_err_t stm32_runprot_memory(const stm32_t *stm) {
stm32_err_t stm32_runprot_memory(const stm32_unique_ptr &stm) {
if (stm->cmd->ur == STM32_CMD_ERR) {
ESP_LOGD(TAG, "Error: READOUT UNPROTECT command not implemented in bootloader.");
return STM32_ERR_NO_CMD;
@ -792,7 +794,7 @@ stm32_err_t stm32_runprot_memory(const stm32_t *stm) {
[]() { ESP_LOGD(TAG, "Error: Failed to READOUT UNPROTECT"); });
}
stm32_err_t stm32_readprot_memory(const stm32_t *stm) {
stm32_err_t stm32_readprot_memory(const stm32_unique_ptr &stm) {
if (stm->cmd->rp == STM32_CMD_ERR) {
ESP_LOGD(TAG, "Error: READOUT PROTECT command not implemented in bootloader.");
return STM32_ERR_NO_CMD;
@ -805,7 +807,7 @@ stm32_err_t stm32_readprot_memory(const stm32_t *stm) {
[]() { ESP_LOGD(TAG, "Error: Failed to READOUT PROTECT"); });
}
stm32_err_t stm32_erase_memory(const stm32_t *stm, uint32_t spage, uint32_t pages) {
stm32_err_t stm32_erase_memory(const stm32_unique_ptr &stm, uint32_t spage, uint32_t pages) {
if (!pages || spage > STM32_MAX_PAGES || ((pages != STM32_MASS_ERASE) && ((spage + pages) > STM32_MAX_PAGES)))
return STM32_ERR_OK;
@ -847,7 +849,7 @@ stm32_err_t stm32_erase_memory(const stm32_t *stm, uint32_t spage, uint32_t page
return STM32_ERR_OK;
}
static stm32_err_t stm32_run_raw_code(const stm32_t *stm, uint32_t target_address, const uint8_t *code,
static stm32_err_t stm32_run_raw_code(const stm32_unique_ptr &stm, uint32_t target_address, const uint8_t *code,
uint32_t code_size) {
static constexpr uint32_t BUFFER_SIZE = 256;
@ -893,7 +895,7 @@ static stm32_err_t stm32_run_raw_code(const stm32_t *stm, uint32_t target_addres
return stm32_go(stm, target_address);
}
stm32_err_t stm32_go(const stm32_t *stm, const uint32_t address) {
stm32_err_t stm32_go(const stm32_unique_ptr &stm, const uint32_t address) {
auto *const stream = stm->stream;
if (stm->cmd->go == STM32_CMD_ERR) {
@ -916,7 +918,7 @@ stm32_err_t stm32_go(const stm32_t *stm, const uint32_t address) {
return STM32_ERR_OK;
}
stm32_err_t stm32_reset_device(const stm32_t *stm) {
stm32_err_t stm32_reset_device(const stm32_unique_ptr &stm) {
const auto target_address = stm->dev->ram_start;
if (stm->dev->flags & F_OBLL) {
@ -927,7 +929,8 @@ stm32_err_t stm32_reset_device(const stm32_t *stm) {
}
}
stm32_err_t stm32_crc_memory(const stm32_t *stm, const uint32_t address, const uint32_t length, uint32_t *const crc) {
stm32_err_t stm32_crc_memory(const stm32_unique_ptr &stm, const uint32_t address, const uint32_t length,
uint32_t *const crc) {
static constexpr auto BUFFER_SIZE = 5;
auto *const stream = stm->stream;
@ -1022,7 +1025,7 @@ uint32_t stm32_sw_crc(uint32_t crc, uint8_t *buf, unsigned int len) {
return crc;
}
stm32_err_t stm32_crc_wrapper(const stm32_t *stm, uint32_t address, uint32_t length, uint32_t *crc) {
stm32_err_t stm32_crc_wrapper(const stm32_unique_ptr &stm, uint32_t address, uint32_t length, uint32_t *crc) {
static constexpr uint32_t CRC_INIT_VALUE = 0xFFFFFFFF;
static constexpr uint32_t BUFFER_SIZE = 256;

28
esphome/components/shelly_dimmer/stm32flash.h
View file

@ -23,6 +23,7 @@
#ifdef USE_SHD_FIRMWARE_DATA
#include <cstdint>
#include <memory>
#include "esphome/components/uart/uart.h"
namespace esphome {
@ -108,19 +109,20 @@ struct VarlenCmd {
uint8_t length;
};
stm32_t *stm32_init(uart::UARTDevice *stream, uint8_t flags, char init);
void stm32_close(stm32_t *stm);
stm32_err_t stm32_read_memory(const stm32_t *stm, uint32_t address, uint8_t *data, unsigned int len);
stm32_err_t stm32_write_memory(const stm32_t *stm, uint32_t address, const uint8_t *data, unsigned int len);
stm32_err_t stm32_wunprot_memory(const stm32_t *stm);
stm32_err_t stm32_wprot_memory(const stm32_t *stm);
stm32_err_t stm32_erase_memory(const stm32_t *stm, uint32_t spage, uint32_t pages);
stm32_err_t stm32_go(const stm32_t *stm, uint32_t address);
stm32_err_t stm32_reset_device(const stm32_t *stm);
stm32_err_t stm32_readprot_memory(const stm32_t *stm);
stm32_err_t stm32_runprot_memory(const stm32_t *stm);
stm32_err_t stm32_crc_memory(const stm32_t *stm, uint32_t address, uint32_t length, uint32_t *crc);
stm32_err_t stm32_crc_wrapper(const stm32_t *stm, uint32_t address, uint32_t length, uint32_t *crc);
using stm32_unique_ptr = std::unique_ptr<stm32_t, void (*)(stm32_t *)>;
stm32_unique_ptr stm32_init(uart::UARTDevice *stream, uint8_t flags, char init);
stm32_err_t stm32_read_memory(const stm32_unique_ptr &stm, uint32_t address, uint8_t *data, unsigned int len);
stm32_err_t stm32_write_memory(const stm32_unique_ptr &stm, uint32_t address, const uint8_t *data, unsigned int len);
stm32_err_t stm32_wunprot_memory(const stm32_unique_ptr &stm);
stm32_err_t stm32_wprot_memory(const stm32_unique_ptr &stm);
stm32_err_t stm32_erase_memory(const stm32_unique_ptr &stm, uint32_t spage, uint32_t pages);
stm32_err_t stm32_go(const stm32_unique_ptr &stm, uint32_t address);
stm32_err_t stm32_reset_device(const stm32_unique_ptr &stm);
stm32_err_t stm32_readprot_memory(const stm32_unique_ptr &stm);
stm32_err_t stm32_runprot_memory(const stm32_unique_ptr &stm);
stm32_err_t stm32_crc_memory(const stm32_unique_ptr &stm, uint32_t address, uint32_t length, uint32_t *crc);
stm32_err_t stm32_crc_wrapper(const stm32_unique_ptr &stm, uint32_t address, uint32_t length, uint32_t *crc);
uint32_t stm32_sw_crc(uint32_t crc, uint8_t *buf, unsigned int len);
} // namespace shelly_dimmer