/*==============================================================================
*
*/
void handle_tx_okay_irq(void)
{
switch(g_comblk_state)
{
/*----------------------------------------------------------------------
* The TX_OKAY interrupt should only be enabled for states COMBLK_TX_CMD
* and COMBLK_TX_DATA.
*/
case COMBLK_TX_CMD:
if(g_comblk_cmd_size > 0)
{
uint32_t size_sent;
size_sent = fill_tx_fifo(g_comblk_p_cmd, g_comblk_cmd_size);
if(size_sent < g_comblk_cmd_size)
{
g_comblk_cmd_size = g_comblk_cmd_size - size_sent;
g_comblk_p_cmd = &g_comblk_p_cmd[size_sent];
}
else
{
g_comblk_cmd_size = 0;
if(g_comblk_data_size > 0)
{
g_comblk_state = COMBLK_TX_DATA;
}
else
{
g_comblk_state = COMBLK_WAIT_RESPONSE;
}
}
}
else
{
/*
* This is an invalid situation indicating a bug in the driver
* or corrupted memory.
*/
ASSERT(0);
abort_current_cmd();
}
break;
case COMBLK_TX_DATA:
if(g_comblk_data_size > 0)
{
uint32_t size_sent;
size_sent = fill_tx_fifo(g_comblk_p_data, g_comblk_data_size);
if(size_sent < g_comblk_data_size)
{
g_comblk_data_size = g_comblk_data_size - size_sent;
g_comblk_p_data = &g_comblk_p_data[size_sent];
}
else
{
COMBLK->INT_ENABLE &= ~TXTOKAY_MASK;
g_comblk_state = COMBLK_WAIT_RESPONSE;
}
}
else
{
/*
* This is an invalid situation indicating a bug in the driver
* or corrupted memory.
*/
ASSERT(0);
abort_current_cmd();
}
break;
/*----------------------------------------------------------------------
* The TX_OKAY interrupt should NOT be enabled for states COMBLK_IDLE,
* COMBLK_WAIT_RESPONSE and COMBLK_RX_RESPONSE.
*/
case COMBLK_IDLE:
/* Fall through */
case COMBLK_WAIT_RESPONSE:
/* Fall through */
case COMBLK_RX_RESPONSE:
/* Fall through */
default:
COMBLK->INT_ENABLE &= ~TXTOKAY_MASK;
g_comblk_state = COMBLK_IDLE;
break;
}
}
/*==============================================================================
*
*/
void MSS_COMBLK_send_cmd
(
const uint8_t * p_cmd,
uint16_t cmd_size,
const uint8_t * p_data,
uint32_t data_size,
uint8_t * p_response,
uint16_t response_size,
comblk_completion_handler_t completion_handler
)
{
uint16_t size_sent;
ASSERT(cmd_size > 0);
/*
* Disable and clear previous interrupts.
*/
NVIC_DisableIRQ(ComBlk_IRQn);
COMBLK->INT_ENABLE = 0;
NVIC_ClearPendingIRQ(ComBlk_IRQn);
/*
* Abort current command if any.
*/
abort_current_cmd();
/*
* Initialialize COMBLK driver state variables:
*/
g_request_in_progress = 1;
g_comblk_cmd_opcode = p_cmd[0];
g_comblk_p_cmd = p_cmd;
g_comblk_cmd_size = cmd_size;
g_comblk_p_data = p_data;
g_comblk_data_size = data_size;
g_comblk_p_response = p_response;
g_comblk_response_size = response_size;
g_comblk_response_idx = 0;
g_comblk_completion_handler = completion_handler;
/*
* Fill FIFO with command.
*/
send_cmd_opcode(g_comblk_cmd_opcode);
size_sent = fill_tx_fifo(p_cmd, cmd_size - 1);
++size_sent;
if(size_sent < cmd_size)
{
g_comblk_cmd_size = g_comblk_cmd_size - size_sent;
g_comblk_p_cmd = &g_comblk_p_cmd[size_sent];
g_comblk_state = COMBLK_TX_CMD;
}
else
{
g_comblk_cmd_size = 0;
if(g_comblk_data_size > 0)
{
g_comblk_state = COMBLK_TX_DATA;
}
else
{
g_comblk_state = COMBLK_WAIT_RESPONSE;
}
}
/*
* Enable interrupt.
*/
COMBLK->INT_ENABLE |= (TXTOKAY_MASK | RCVOKAY_MASK);
NVIC_EnableIRQ(ComBlk_IRQn);
}
/*==============================================================================
*
*/
static void handle_tx_okay_irq(void)
{
switch(g_comblk_state)
{
/*----------------------------------------------------------------------
* The TX_OKAY interrupt should only be enabled for states COMBLK_TX_CMD
* and COMBLK_TX_DATA.
*/
case COMBLK_TX_CMD:
if(g_comblk_cmd_size > 0u)
{
uint32_t size_sent;
size_sent = fill_tx_fifo(g_comblk_p_cmd, g_comblk_cmd_size);
if(size_sent < g_comblk_cmd_size)
{
g_comblk_cmd_size = g_comblk_cmd_size - (uint16_t)size_sent;
g_comblk_p_cmd = &g_comblk_p_cmd[size_sent];
}
else
{
g_comblk_cmd_size = 0u;
if(g_comblk_data_size > 0u)
{
g_comblk_state = COMBLK_TX_DATA;
}
else
{
g_comblk_state = COMBLK_WAIT_RESPONSE;
}
}
}
else
{
/*
* This is an invalid situation indicating a bug in the driver
* or corrupted memory.
*/
ASSERT(0);
abort_current_cmd();
}
break;
case COMBLK_TX_DATA:
if(g_comblk_data_size > 0u)
{
uint32_t size_sent;
size_sent = fill_tx_fifo(g_comblk_p_data, g_comblk_data_size);
if(size_sent < g_comblk_data_size)
{
g_comblk_data_size = g_comblk_data_size - size_sent;
g_comblk_p_data = &g_comblk_p_data[size_sent];
}
else
{
COMBLK->INT_ENABLE &= ~TXTOKAY_MASK;
g_comblk_state = COMBLK_WAIT_RESPONSE;
}
}
else
{
/*
* This is an invalid situation indicating a bug in the driver
* or corrupted memory.
*/
ASSERT(0);
abort_current_cmd();
}
break;
case COMBLK_TX_PAGED_DATA:
/*
* Read a page of data if required.
*/
if(0u == g_comblk_data_size)
{
if(g_comblk_page_handler != 0)
{
g_comblk_data_size = g_comblk_page_handler(&g_comblk_p_data);
if(0u == g_comblk_data_size)
{
COMBLK->INT_ENABLE &= ~TXTOKAY_MASK;
g_comblk_state = COMBLK_WAIT_RESPONSE;
}
}
else
{
ASSERT(0);
abort_current_cmd();
}
}
/*
* Transmit the page data or move to COMBLK_WAIT_RESPONSE state if
* no further page data could be obtained by the call to the page
* handler above.
*/
if(0u == g_comblk_data_size)
{
COMBLK->INT_ENABLE &= ~TXTOKAY_MASK;
g_comblk_state = COMBLK_WAIT_RESPONSE;
}
else
{
uint32_t size_sent;
size_sent = fill_tx_fifo(g_comblk_p_data, g_comblk_data_size);
g_comblk_data_size = g_comblk_data_size - size_sent;
g_comblk_p_data = &g_comblk_p_data[size_sent];
}
break;
/*----------------------------------------------------------------------
* The TX_OKAY interrupt should NOT be enabled for states COMBLK_IDLE,
* COMBLK_WAIT_RESPONSE and COMBLK_RX_RESPONSE.
*/
case COMBLK_IDLE:
/* Fall through */
case COMBLK_WAIT_RESPONSE:
/* Fall through */
case COMBLK_RX_RESPONSE:
/* Fall through */
default:
COMBLK->INT_ENABLE &= ~TXTOKAY_MASK;
complete_request(0u);
g_comblk_state = COMBLK_IDLE;
break;
}
}
/*==============================================================================
*
*/
void MSS_COMBLK_send_cmd_with_ptr
(
uint8_t cmd_opcode,
uint32_t cmd_params_ptr,
uint8_t * p_response,
uint16_t response_size,
comblk_completion_handler_t completion_handler
)
{
uint32_t tx_okay;
/*--------------------------------------------------------------------------
* Disable and clear previous interrupts.
*/
NVIC_DisableIRQ(ComBlk_IRQn);
COMBLK->INT_ENABLE = 0;
NVIC_ClearPendingIRQ(ComBlk_IRQn);
/*--------------------------------------------------------------------------
* Abort current command if any.
*/
abort_current_cmd();
/*--------------------------------------------------------------------------
* Initialialize COMBLK driver state variables:
*/
g_request_in_progress = 1;
g_comblk_cmd_opcode = cmd_opcode;
g_comblk_p_cmd = 0;
g_comblk_cmd_size = 0;
g_comblk_p_data = 0;
g_comblk_data_size = 0;
g_comblk_p_response = p_response;
g_comblk_response_size = response_size;
g_comblk_response_idx = 0;
g_comblk_completion_handler = completion_handler;
/*--------------------------------------------------------------------------
* Send command opcode as a single byte write to the Tx FIFO.
*/
send_cmd_opcode(g_comblk_cmd_opcode);
/*--------------------------------------------------------------------------
* Send the command parameters pointer to the Tx FIFO as a single 4 bytes
* write to the Tx FIFO.
*/
COMBLK->CONTROL |= CR_SIZETX_MASK;
/* Wait for space to become available in Tx FIFO. */
do {
tx_okay = COMBLK->STATUS & TXTOKAY_MASK;
} while(!tx_okay);
/* Send command opcode. */
COMBLK->DATA32 = cmd_params_ptr;
COMBLK->CONTROL &= ~CR_SIZETX_MASK;
g_comblk_state = COMBLK_WAIT_RESPONSE;
/*--------------------------------------------------------------------------
* Enable interrupt.
*/
COMBLK->INT_ENABLE |= RCVOKAY_MASK;
NVIC_EnableIRQ(ComBlk_IRQn);
}
/*==============================================================================
*
*/
void MSS_COMBLK_send_paged_cmd
(
const uint8_t * p_cmd,
uint16_t cmd_size,
uint8_t * p_response,
uint16_t response_size,
uint32_t (*page_read_handler)(uint8_t const **),
void (*completion_handler)(uint8_t *, uint16_t)
)
{
uint32_t size_sent;
uint8_t irq_enable = 0u;
ASSERT(cmd_size > 0u);
/*
* Disable and clear previous interrupts.
*/
NVIC_DisableIRQ(ComBlk_IRQn);
COMBLK->INT_ENABLE = 0u;
NVIC_ClearPendingIRQ(ComBlk_IRQn);
/*
* Abort current command if any.
*/
abort_current_cmd();
/*
* Initialialize COMBLK driver state variables:
*/
g_request_in_progress = 1u;
g_comblk_cmd_opcode = p_cmd[0];
g_comblk_p_cmd = p_cmd;
g_comblk_cmd_size = cmd_size;
g_comblk_p_data = 0;
g_comblk_data_size = 0u;
g_comblk_p_response = p_response;
g_comblk_response_size = response_size;
g_comblk_response_idx = 0u;
g_comblk_page_handler = page_read_handler;
g_comblk_completion_handler = completion_handler;
/*
* Fill FIFO with command.
*/
send_cmd_opcode(g_comblk_cmd_opcode);
size_sent = fill_tx_fifo(&p_cmd[1], cmd_size - 1u);
++size_sent; /* Adjust for opcode byte sent. */
if(size_sent < cmd_size)
{
g_comblk_cmd_size = g_comblk_cmd_size - (uint16_t)size_sent;
g_comblk_p_cmd = &g_comblk_p_cmd[size_sent];
g_comblk_state = COMBLK_TX_CMD;
irq_enable = TXTOKAY_MASK | RCVOKAY_MASK;
}
else
{
g_comblk_cmd_size = 0u;
g_comblk_state = COMBLK_TX_PAGED_DATA;
irq_enable = TXTOKAY_MASK | RCVOKAY_MASK;
}
/*
* Enable interrupt.
*/
COMBLK->INT_ENABLE |= irq_enable;
NVIC_EnableIRQ(ComBlk_IRQn);
}
