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Fix for counter overflow in delays based on sdk_system_get_time()

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This commit is contained in:
UncleRus 2017-04-21 17:53:13 +05:00
parent b3f658bdbf
commit 55e08de21c
3 changed files with 23 additions and 16 deletions
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23
extras/sdio/sdio.c
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@ -141,6 +141,8 @@ static uint16_t crc_ccitt(const uint8_t *data, size_t n)
#define spi_skip_word() do { spi_read_byte(); spi_read_byte(); } while(0)
#define spi_skip_dword() do { spi_read_byte(); spi_read_byte(); spi_read_byte(); spi_read_byte(); } while(0)
#define timeout_expired(start, len) ((uint32_t)(sdk_system_get_time() - (start)) >= (len))
inline static uint16_t spi_write_word(uint16_t word)
{
return (spi_transfer_8(BUS, word >> 8) << 8) | spi_transfer_8(BUS, word);
@ -154,9 +156,10 @@ inline static void spi_read_bytes(uint8_t *dst, size_t size)
static bool wait()
{
uint32_t stop = sdk_system_get_time() + IO_TIMEOUT_US;
uint32_t start = sdk_system_get_time();
while (spi_read_byte() != 0xff)
if (sdk_system_get_time() >= stop)
if (timeout_expired(start, IO_TIMEOUT_US))
return false;
return true;
}
@ -208,11 +211,11 @@ inline static sdio_error_t set_error(sdio_card_t *card, sdio_error_t err)
static sdio_error_t read_data(sdio_card_t *card, uint8_t *dst, size_t size)
{
uint32_t timeout = sdk_system_get_time() + IO_TIMEOUT_US;
uint32_t start = sdk_system_get_time();
while (true)
{
if (sdk_system_get_time() >= timeout)
if (timeout_expired(start, IO_TIMEOUT_US))
return set_error(card, SDIO_ERR_TIMEOUT);
uint8_t b = spi_read_byte();
@ -269,7 +272,7 @@ sdio_error_t sdio_init(sdio_card_t *card, uint8_t cs_pin, uint32_t high_freq_div
spi_set_settings(BUS, &s);
gpio_enable(card->cs_pin, GPIO_OUTPUT);
uint32_t timeout = sdk_system_get_time() + INIT_TIMEOUT_US;
uint32_t start = sdk_system_get_time();
spi_cs_low(card);
spi_cs_high(card);
@ -279,7 +282,7 @@ sdio_error_t sdio_init(sdio_card_t *card, uint8_t cs_pin, uint32_t high_freq_div
// Set card to the SPI idle mode
while (command(card, CMD0, 0) != BV(R1_IDLE_STATE))
{
if (sdk_system_get_time() >= timeout)
if (timeout_expired(start, INIT_TIMEOUT_US))
return set_error(card, SDIO_ERR_TIMEOUT);
}
@ -300,7 +303,7 @@ sdio_error_t sdio_init(sdio_card_t *card, uint8_t cs_pin, uint32_t high_freq_div
break;
}
if (sdk_system_get_time() >= timeout)
if (timeout_expired(start, INIT_TIMEOUT_US))
return set_error(card, SDIO_ERR_TIMEOUT);
}
@ -311,13 +314,13 @@ sdio_error_t sdio_init(sdio_card_t *card, uint8_t cs_pin, uint32_t high_freq_div
{
card->type = SDIO_TYPE_MMC;
while (command(card, CMD1, 0))
if (sdk_system_get_time() >= timeout)
if (timeout_expired(start, INIT_TIMEOUT_US))
return set_error(card, SDIO_ERR_TIMEOUT);
}
else
{
while (app_command(card, ACMD41, 0))
if (sdk_system_get_time() >= timeout)
if (timeout_expired(start, INIT_TIMEOUT_US))
return set_error(card, SDIO_ERR_TIMEOUT);
}
@ -328,7 +331,7 @@ sdio_error_t sdio_init(sdio_card_t *card, uint8_t cs_pin, uint32_t high_freq_div
{
// SD2 or SDHC
while (app_command(card, ACMD41, BV(30)) != 0)
if (sdk_system_get_time() >= timeout)
if (timeout_expired(start, INIT_TIMEOUT_US))
return set_error(card, SDIO_ERR_TIMEOUT);
}
// read OCR