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@ -23,10 +23,6 @@
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#include "printf.h"
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#include "printf.h"
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#include "matrix.h"
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#include "matrix.h"
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#ifndef I2C_DRIVER
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#define I2C_DRIVER I2CD1
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#endif
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/**
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/**
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* I2C slave test routine.
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* I2C slave test routine.
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*
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*
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@ -37,8 +33,13 @@
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* b) A write then read transaction - calls a message processor and returns the generated reply.
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* b) A write then read transaction - calls a message processor and returns the generated reply.
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* Stretches clock until reply available.
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* Stretches clock until reply available.
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*/
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*/
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// static const I2CConfig masterI2CConfig = {
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// 400000
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// };
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static const I2CConfig uniI2CConfig = {
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I2CSlaveMsgCB twi2c_slave_message_process, catchError, clearAfterSend;
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static const I2CConfig slaveI2CConfig = {
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STM32_TIMINGR_PRESC(15U) |
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STM32_TIMINGR_PRESC(15U) |
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STM32_TIMINGR_SCLDEL(4U) | STM32_TIMINGR_SDADEL(2U) |
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STM32_TIMINGR_SCLDEL(4U) | STM32_TIMINGR_SDADEL(2U) |
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STM32_TIMINGR_SCLH(15U) | STM32_TIMINGR_SCLL(21U),
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STM32_TIMINGR_SCLH(15U) | STM32_TIMINGR_SCLL(21U),
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@ -52,7 +53,7 @@ char initialReplyBody[50] = "Initial reply"; // 'Status' response if read
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uint32_t messageCounter = 0; /* Counts number of messages received to return as part of response */
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uint32_t messageCounter = 0; /* Counts number of messages received to return as part of response */
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uint8_t rxBody[240]; /* stores last message master sent us (intentionally a few bytes smaller than txBody) */
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uint8_t rxBody[2]; /* stores last message master sent us (intentionally a few bytes smaller than txBody) */
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uint8_t txBody[MATRIX_ROWS/2]; /* Return message buffer for computed replies */
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uint8_t txBody[MATRIX_ROWS/2]; /* Return message buffer for computed replies */
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BaseSequentialStream *chp = NULL; // Used for serial logging
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BaseSequentialStream *chp = NULL; // Used for serial logging
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@ -68,7 +69,7 @@ const I2CSlaveMsg echoRx =
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};
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};
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// 'Empty' reply when nothing to say, and no message received. In RAM, to allow update
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// // 'Empty' reply when nothing to say, and no message received. In RAM, to allow update
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I2CSlaveMsg initialReply =
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I2CSlaveMsg initialReply =
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{
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{
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sizeof(initialReplyBody), /* trailing zero byte will be repeated as needed */
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sizeof(initialReplyBody), /* trailing zero byte will be repeated as needed */
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@ -78,6 +79,16 @@ I2CSlaveMsg initialReply =
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catchError /* Error hook */
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catchError /* Error hook */
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};
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};
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// // 'Empty' reply when nothing to say, and no message received. In RAM, to allow update
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// I2CSlaveMsg initialReply =
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// {
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// 0, /* trailing zero byte will be repeated as needed */
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// NULL,
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// NULL, /* do nothing on address match */
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// NULL, /* do nothing after reply sent */
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// catchError /* Error hook */
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// };
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// Response to received messages
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// Response to received messages
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I2CSlaveMsg echoReply = { /* this is in RAM so size may be updated */
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I2CSlaveMsg echoReply = { /* this is in RAM so size may be updated */
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@ -129,7 +140,8 @@ void twi2c_slave_message_process(I2CDriver *i2cp) {
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// size_t len = i2cSlaveBytes(i2cp); // Number of bytes received
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// size_t len = i2cSlaveBytes(i2cp); // Number of bytes received
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matrix_copy(txBody);
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memset(txBody, 0, MATRIX_ROWS / 2 * sizeof(matrix_row_t));
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// matrix_copy(txBody);
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echoReply.size = MATRIX_ROWS / 2;
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echoReply.size = MATRIX_ROWS / 2;
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i2cSlaveReplyI(i2cp, &echoReply);
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i2cSlaveReplyI(i2cp, &echoReply);
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@ -162,12 +174,13 @@ void twi2c_slave_init(void) {
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palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP);
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palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP);
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i2cStart(&I2C_DRIVER, &uniI2CConfig);
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i2cStart(&I2C_DRIVER, &slaveI2CConfig);
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#if HAL_USE_I2C_SLAVE
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#if HAL_USE_I2C_SLAVE
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I2C_DRIVER.slaveTimeout = MS2ST(100); // Time for complete message
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I2C_DRIVER.slaveTimeout = MS2ST(100); // Time for complete message
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#endif
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#endif
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i2cSlaveConfigure(&I2C_DRIVER, &echoRx, &initialReply);
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// i2cSlaveConfigure(&I2C_DRIVER, &echoRx, &initialReply);
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i2cSlaveConfigure(&I2C_DRIVER, &echoRx, &echoReply);
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// Enable match address after everything else set up
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// Enable match address after everything else set up
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i2cMatchAddress(&I2C_DRIVER, slaveI2Caddress/2);
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i2cMatchAddress(&I2C_DRIVER, slaveI2Caddress/2);
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@ -186,9 +199,18 @@ void twi2c_slave_task(void) {
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}
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}
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void twi2c_master_init(void) {
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void twi2c_master_init(void) {
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i2cStart(&I2C_DRIVER, &uniI2CConfig);
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}
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msg_t twi2c_master_send(i2caddr_t address, const uint8_t * txbuf, uint8_t * rxbuf, systime_t timeout) {
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palSetGroupMode(GPIOB,8,9, PAL_MODE_INPUT); // Try releasing special pins for a short time
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return i2cMasterTransmitTimeout(&I2C_DRIVER, address, txbuf, sizeof(txbuf), rxbuf, sizeof(rxbuf), timeout);
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chThdSleepMilliseconds(10);
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palSetPadMode(GPIOB, 9, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP);
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palSetPadMode(GPIOB, 8, PAL_MODE_ALTERNATE(4) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_PUPDR_PULLUP);
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i2cStart(&I2C_DRIVER, &slaveI2CConfig);
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// try high drive (from kiibohd)
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// I2C_DRIVER.i2c->C2 |= I2Cx_C2_HDRS;
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// try glitch fixing (from kiibohd)
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// I2C_DRIVER.i2c->FLT = 4;
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}
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}
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