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gpio: tle9104: support coexistance with other SPI devices 

Release bus after use
This commit is contained in:
Andrey Gusakov 2024-06-20 23:25:13 +03:00 committed by rusefillc
parent 6d6ed1aef0
commit 8a8463fc29
1 changed files with 12 additions and 5 deletions
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17
firmware/hw_layer/drivers/gpio/tle9104.cpp
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@ -53,7 +53,9 @@ static bool parityBit(uint16_t val) {
return (count % 2) == 1;
}
uint16_t Tle9104::readWrite(uint8_t addr, uint8_t data) {
uint16_t Tle9104::readWrite(uint8_t addr, uint8_t data) {
SPIDriver *spi = cfg->spi_bus;
uint16_t tx = (addr << 8) + data;
// set the parity bit appropriately
@ -61,9 +63,18 @@ uint16_t Tle9104::readWrite(uint8_t addr, uint8_t data) {
SPIDriver* spi = cfg->spi_bus;
/* Acquire ownership of the bus. */
spiAcquireBus(spi);
/* Setup transfer parameters. */
spiStart(spi, &cfg->spi_config);
/* Slave Select assertion. */
spiSelect(spi);
/* Atomic transfer operations. */
uint16_t rx = spiPolledExchange(spi, tx);
/* Slave Select de-assertion. */
spiUnselect(spi);
/* Ownership release. */
spiReleaseBus(spi);
/*bool parityOk = */parityBit(rx);
@ -104,8 +115,6 @@ int Tle9104::init() {
m_resn.setValue(true);
chThdSleepMilliseconds(1);
spiStart(cfg->spi_bus, &cfg->spi_config);
// read ID register
uint16_t id = read(TLE9104_REG_ICVID);
@ -143,8 +152,6 @@ int Tle9104::writePad(size_t pin, int value) {
}
void Tle9104::updateDiagState() {
spiStart(cfg->spi_bus, &cfg->spi_config);
diag_on12 = read(TLE9104_REG_DIAG_OUT_1_2_ON);
diag_on34 = read(TLE9104_REG_DIAG_OUT_3_4_ON);
diag_off = read(TLE9104_REG_DIAG_OFF);