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Fixes fifo range calculation

pull/165/head
iwoodsawyer 2021-05-12 22:06:29 -07:00
parent d326e7a8fc
commit 563a7c823e
1 changed files with 26 additions and 8 deletions
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34
soes/hal/raspberrypi-lan9252/esc_hw.c
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@ -72,7 +72,7 @@ static void bcm2835_spi_write_32 (uint16_t address, uint32_t val)
data[6] = ((val >> 24) & 0xFF);
/* Write data */
bcm2835_spi_transfern(data, sizeof(data));
bcm2835_spi_transfern(data, 7);
}
/* bcm2835 spi single read */
@ -85,7 +85,7 @@ static uint32_t bcm2835_spi_read_32 (uint16_t address)
data[2] = (address & 0xFF);
/* Read data */
bcm2835_spi_transfern(data, sizeof(data));
bcm2835_spi_transfern(data, 7);
return ((data[6] << 24) |
(data[5] << 16) |
@ -131,7 +131,7 @@ static void ESC_read_pram (uint16_t address, void *buf, uint16_t len)
{
uint32_t value;
uint8_t * temp_buf = buf;
uint16_t quotient, byte_offset = 0;
uint16_t quotient, remainder, byte_offset = 0;
uint8_t fifo_cnt, fifo_size, fifo_range, first_byte_position, temp_len;
uint8_t *buffer = NULL;
int i, size;
@ -155,8 +155,17 @@ static void ESC_read_pram (uint16_t address, void *buf, uint16_t len)
while (len > 0)
{
/* Wait for read availabiliy */
quotient = len/4;
if ((len - quotient*4) != 0)
if (byte_offset > 0)
{
quotient = len/4;
remainder = len - quotient*4;
}
else
{
quotient = (len + first_byte_position)/4;
remainder = (len + first_byte_position) - quotient*4;
}
if (remainder != 0)
{
quotient++;
}
@ -217,7 +226,7 @@ static void ESC_write_pram (uint16_t address, void *buf, uint16_t len)
{
uint32_t value;
uint8_t * temp_buf = buf;
uint16_t quotient, byte_offset = 0;
uint16_t quotient, remainder, byte_offset = 0;
uint8_t fifo_cnt, fifo_size, fifo_range, first_byte_position, temp_len;
uint8_t *buffer = NULL;
int i, size;
@ -241,8 +250,17 @@ static void ESC_write_pram (uint16_t address, void *buf, uint16_t len)
while (len > 0)
{
/* Wait for write availabiliy */
quotient = len/4;
if ((len - quotient*4) != 0)
if (byte_offset > 0)
{
quotient = len/4;
remainder = len - quotient*4;
}
else
{
quotient = (len + first_byte_position)/4;
remainder = (len + first_byte_position) - quotient*4;
}
if (remainder != 0)
{
quotient++;
}