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Spi slave improvments #6580

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Merged
merged 11 commits into from
Oct 31, 2019
Merged

Spi slave improvments #6580

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daba8e3
Status length arg in begin() added
saloid Oct 1, 2019
de9590d
readable bits config
saloid Oct 1, 2019
8ea1fb3
strange line removed
saloid Oct 1, 2019
c3f5ee5
Empty constructor added
saloid Oct 28, 2019
f9a23f8
Constructor without parameters added
saloid Oct 28, 2019
1204907
Code formatting fix
saloid Oct 28, 2019
4dacdfb
default value in constructor removed
saloid Oct 28, 2019
1539a31
Merge branch 'master' into spiSlave_upgrade
saloid Oct 28, 2019
e80f2bd
default begin method forwarded to new
saloid Oct 30, 2019
4e4e17b
Comments about bits added, else if except if
saloid Oct 30, 2019
fb4afea
Merge branch 'master' into spiSlave_upgrade
devyte Oct 30, 2019
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9 changes: 6 additions & 3 deletions libraries/SPISlave/src/SPISlave.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -63,14 +63,17 @@ void SPISlaveClass::_s_status_tx(void *arg)
{
reinterpret_cast<SPISlaveClass*>(arg)->_status_tx();
}

void SPISlaveClass::begin()
void SPISlaveClass::begin() //backwards compatibility
{
begin(4);
}
void SPISlaveClass::begin(uint8_t statusLength)
{
hspi_slave_onData(&_s_data_rx);
hspi_slave_onDataSent(&_s_data_tx);
hspi_slave_onStatus(&_s_status_rx);
hspi_slave_onStatusSent(&_s_status_tx);
hspi_slave_begin(4, this);
hspi_slave_begin(statusLength, this);
}
void SPISlaveClass::end()
{
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1 change: 1 addition & 0 deletions libraries/SPISlave/src/SPISlave.h
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ class SPISlaveClass
{}
~SPISlaveClass() {}
void begin();
void begin(uint8_t statusLength);
void end();
void setData(uint8_t * data, size_t len);
void setData(const char * data)
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11 changes: 8 additions & 3 deletions libraries/SPISlave/src/hspi_slave.c
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Expand Up @@ -72,11 +72,10 @@ void ICACHE_RAM_ATTR _hspi_slave_isr_handler(void *arg)

void hspi_slave_begin(uint8_t status_len, void * arg)
{
status_len &= 7;
if(status_len > 4) {
status_len = 4; //max 32 bits
}
if(status_len == 0) {
else if(status_len == 0) {
status_len = 1; //min 8 bits
}

Expand All @@ -85,7 +84,13 @@ void hspi_slave_begin(uint8_t status_len, void * arg)
pinMode(MISO, SPECIAL);
pinMode(MOSI, SPECIAL);

SPI1S = SPISE | SPISBE | 0x3E0; // SPI_SLAVE_REG
SPI1S = SPISE | SPISBE | SPISTRIE | SPISWBIE | SPISRSIE | SPISWSIE | SPISRBIE; //(0x63E0)
//setting config bits in SPI_SLAVE_REG, defined in "esp8266_peri.h" :
//SPISE - spi slave enable
//SPISBE - allows work (read/write) with buffer, without this only? status available
//SPISTRIE - enables TRANS?? interrupt
//other SPISxxIE - enables corresponding interrupts (read(R)/write(W) status(S) and buffer(B))

SPI1U = SPIUMISOH | SPIUCOMMAND | SPIUSSE; // SPI_USER_REG
SPI1CLK = 0;
SPI1U2 = (7 << SPILCOMMAND); // SPI_USER2_REG
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