[FL-2084] I2C memory read/write (#951)
* furi_hal_i2c: read/write registers * remove i2c_acqure/release * i2c_is_device_ready without reading data Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
Nikolay Minaylov
GitHub
parent
3fbb97ba29
commit
a3aaf50ecd
@ -322,7 +322,6 @@ void cli_command_free_blocks(Cli* cli, string_t args, void* context) {
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void cli_command_i2c(Cli* cli, string_t args, void* context) {
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furi_hal_i2c_acquire(&furi_hal_i2c_handle_external);
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uint8_t test = 0;
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printf("Scanning external i2c on PC0(SCL)/PC1(SDA)\r\n"
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"Clock: 100khz, 7bit address\r\n"
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"\r\n");
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@ -331,8 +330,8 @@ void cli_command_i2c(Cli* cli, string_t args, void* context) {
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for(uint8_t row = 0; row < 0x8; row++) {
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printf("%x | ", row);
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for(uint8_t column = 0; column <= 0xF; column++) {
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bool ret = furi_hal_i2c_rx(
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&furi_hal_i2c_handle_external, ((row << 4) + column) << 1, &test, 1, 2);
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bool ret = furi_hal_i2c_is_device_ready(
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&furi_hal_i2c_handle_external, ((row << 4) + column) << 1, 2);
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printf("%c ", ret ? '#' : '-');
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}
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printf("\r\n");
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@ -157,3 +157,188 @@ bool furi_hal_i2c_trx(
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return false;
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}
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}
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bool furi_hal_i2c_is_device_ready(FuriHalI2cBusHandle* handle, uint8_t i2c_addr, uint32_t timeout) {
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furi_check(handle);
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furi_check(handle->bus->current_handle == handle);
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furi_assert(timeout > 0);
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bool ret = true;
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uint32_t timeout_tick = HAL_GetTick() + timeout;
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do {
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while(LL_I2C_IsActiveFlag_BUSY(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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handle->bus->i2c->CR2 =
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((((uint32_t)(i2c_addr) & (I2C_CR2_SADD)) | (I2C_CR2_START) | (I2C_CR2_AUTOEND)) &
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(~I2C_CR2_RD_WRN));
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while((!LL_I2C_IsActiveFlag_NACK(handle->bus->i2c)) &&
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(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c))) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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if(LL_I2C_IsActiveFlag_NACK(handle->bus->i2c)) {
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while(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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LL_I2C_ClearFlag_NACK(handle->bus->i2c);
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// Clear STOP Flag generated by autoend
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LL_I2C_ClearFlag_STOP(handle->bus->i2c);
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// Generate actual STOP
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LL_I2C_GenerateStopCondition(handle->bus->i2c);
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ret = false;
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}
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while(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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LL_I2C_ClearFlag_STOP(handle->bus->i2c);
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} while(0);
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return ret;
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}
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bool furi_hal_i2c_read_reg_8(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint8_t* data,
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uint32_t timeout) {
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furi_check(handle);
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return furi_hal_i2c_trx(handle, i2c_addr, ®_addr, 1, data, 1, timeout);
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}
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bool furi_hal_i2c_read_reg_16(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint16_t* data,
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uint32_t timeout) {
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furi_check(handle);
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uint8_t reg_data[2];
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bool ret = furi_hal_i2c_trx(handle, i2c_addr, ®_addr, 1, reg_data, 2, timeout);
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*data = (reg_data[0] << 8) | (reg_data[1]);
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return ret;
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}
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bool furi_hal_i2c_read_mem(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t mem_addr,
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uint8_t* data,
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uint8_t len,
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uint32_t timeout) {
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furi_check(handle);
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return furi_hal_i2c_trx(handle, i2c_addr, &mem_addr, 1, data, len, timeout);
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}
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bool furi_hal_i2c_write_reg_8(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint8_t data,
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uint32_t timeout) {
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furi_check(handle);
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uint8_t tx_data[2];
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tx_data[0] = reg_addr;
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tx_data[1] = data;
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return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 2, timeout);
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}
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bool furi_hal_i2c_write_reg_16(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint16_t data,
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uint32_t timeout) {
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furi_check(handle);
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uint8_t tx_data[3];
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tx_data[0] = reg_addr;
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tx_data[1] = (data >> 8) & 0xFF;
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tx_data[2] = data & 0xFF;
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return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 3, timeout);
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}
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bool furi_hal_i2c_write_mem(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t mem_addr,
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uint8_t* data,
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uint8_t len,
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uint32_t timeout) {
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furi_check(handle);
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furi_check(handle->bus->current_handle == handle);
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furi_assert(timeout > 0);
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bool ret = true;
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uint8_t size = len + 1;
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uint32_t timeout_tick = HAL_GetTick() + timeout;
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do {
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while(LL_I2C_IsActiveFlag_BUSY(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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ret = false;
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break;
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}
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}
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if(!ret) {
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break;
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}
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LL_I2C_HandleTransfer(
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handle->bus->i2c,
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i2c_addr,
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LL_I2C_ADDRSLAVE_7BIT,
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size,
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LL_I2C_MODE_AUTOEND,
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LL_I2C_GENERATE_START_WRITE);
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while(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c) || size > 0) {
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if(LL_I2C_IsActiveFlag_TXIS(handle->bus->i2c)) {
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if(size == len + 1) {
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LL_I2C_TransmitData8(handle->bus->i2c, mem_addr);
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} else {
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LL_I2C_TransmitData8(handle->bus->i2c, (*data));
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data++;
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}
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size--;
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}
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if(HAL_GetTick() >= timeout_tick) {
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ret = false;
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break;
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}
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}
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LL_I2C_ClearFlag_STOP(handle->bus->i2c);
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} while(0);
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return ret;
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}
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@ -157,3 +157,188 @@ bool furi_hal_i2c_trx(
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return false;
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}
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}
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bool furi_hal_i2c_is_device_ready(FuriHalI2cBusHandle* handle, uint8_t i2c_addr, uint32_t timeout) {
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furi_check(handle);
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furi_check(handle->bus->current_handle == handle);
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furi_assert(timeout > 0);
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bool ret = true;
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uint32_t timeout_tick = HAL_GetTick() + timeout;
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do {
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while(LL_I2C_IsActiveFlag_BUSY(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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handle->bus->i2c->CR2 =
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((((uint32_t)(i2c_addr) & (I2C_CR2_SADD)) | (I2C_CR2_START) | (I2C_CR2_AUTOEND)) &
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(~I2C_CR2_RD_WRN));
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while((!LL_I2C_IsActiveFlag_NACK(handle->bus->i2c)) &&
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(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c))) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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if(LL_I2C_IsActiveFlag_NACK(handle->bus->i2c)) {
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while(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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LL_I2C_ClearFlag_NACK(handle->bus->i2c);
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// Clear STOP Flag generated by autoend
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LL_I2C_ClearFlag_STOP(handle->bus->i2c);
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// Generate actual STOP
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LL_I2C_GenerateStopCondition(handle->bus->i2c);
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ret = false;
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}
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while(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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return false;
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}
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}
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LL_I2C_ClearFlag_STOP(handle->bus->i2c);
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} while(0);
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return ret;
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}
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bool furi_hal_i2c_read_reg_8(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint8_t* data,
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uint32_t timeout) {
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furi_check(handle);
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return furi_hal_i2c_trx(handle, i2c_addr, ®_addr, 1, data, 1, timeout);
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}
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bool furi_hal_i2c_read_reg_16(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint16_t* data,
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uint32_t timeout) {
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furi_check(handle);
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uint8_t reg_data[2];
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bool ret = furi_hal_i2c_trx(handle, i2c_addr, ®_addr, 1, reg_data, 2, timeout);
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*data = (reg_data[0] << 8) | (reg_data[1]);
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return ret;
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}
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bool furi_hal_i2c_read_mem(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t mem_addr,
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uint8_t* data,
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uint8_t len,
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uint32_t timeout) {
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furi_check(handle);
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return furi_hal_i2c_trx(handle, i2c_addr, &mem_addr, 1, data, len, timeout);
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}
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bool furi_hal_i2c_write_reg_8(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint8_t data,
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uint32_t timeout) {
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furi_check(handle);
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uint8_t tx_data[2];
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tx_data[0] = reg_addr;
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tx_data[1] = data;
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return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 2, timeout);
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}
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bool furi_hal_i2c_write_reg_16(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint16_t data,
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uint32_t timeout) {
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furi_check(handle);
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uint8_t tx_data[3];
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tx_data[0] = reg_addr;
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tx_data[1] = (data >> 8) & 0xFF;
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tx_data[2] = data & 0xFF;
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return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 3, timeout);
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}
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bool furi_hal_i2c_write_mem(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t mem_addr,
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uint8_t* data,
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uint8_t len,
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uint32_t timeout) {
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furi_check(handle);
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furi_check(handle->bus->current_handle == handle);
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furi_assert(timeout > 0);
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bool ret = true;
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uint8_t size = len + 1;
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uint32_t timeout_tick = HAL_GetTick() + timeout;
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do {
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while(LL_I2C_IsActiveFlag_BUSY(handle->bus->i2c)) {
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if(HAL_GetTick() >= timeout_tick) {
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ret = false;
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break;
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}
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}
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if(!ret) {
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break;
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}
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LL_I2C_HandleTransfer(
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handle->bus->i2c,
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i2c_addr,
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LL_I2C_ADDRSLAVE_7BIT,
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size,
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LL_I2C_MODE_AUTOEND,
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LL_I2C_GENERATE_START_WRITE);
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while(!LL_I2C_IsActiveFlag_STOP(handle->bus->i2c) || size > 0) {
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if(LL_I2C_IsActiveFlag_TXIS(handle->bus->i2c)) {
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if(size == len + 1) {
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LL_I2C_TransmitData8(handle->bus->i2c, mem_addr);
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} else {
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LL_I2C_TransmitData8(handle->bus->i2c, (*data));
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data++;
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}
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size--;
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}
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if(HAL_GetTick() >= timeout_tick) {
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ret = false;
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break;
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}
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}
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LL_I2C_ClearFlag_STOP(handle->bus->i2c);
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} while(0);
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return ret;
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}
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@ -84,6 +84,122 @@ bool furi_hal_i2c_trx(
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const uint8_t rx_size,
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uint32_t timeout);
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/** Check if I2C device presents on bus
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*
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* @param handle pointer to FuriHalI2cBusHandle instance
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* @param i2c_addr I2C slave address
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* @param timeout timeout in ticks
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*
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* @return true if device present and is ready, false otherwise
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*/
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bool furi_hal_i2c_is_device_ready(FuriHalI2cBusHandle* handle, uint8_t i2c_addr, uint32_t timeout);
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/** Perform I2C device register read (8-bit)
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*
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* @param handle pointer to FuriHalI2cBusHandle instance
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* @param i2c_addr I2C slave address
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* @param reg_addr register address
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* @param data pointer to register value
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* @param timeout timeout in ticks
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*
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* @return true on successful transfer, false otherwise
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*/
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bool furi_hal_i2c_read_reg_8(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint8_t* data,
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uint32_t timeout);
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/** Perform I2C device register read (16-bit)
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*
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* @param handle pointer to FuriHalI2cBusHandle instance
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* @param i2c_addr I2C slave address
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* @param reg_addr register address
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* @param data pointer to register value
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* @param timeout timeout in ticks
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*
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* @return true on successful transfer, false otherwise
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*/
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bool furi_hal_i2c_read_reg_16(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t reg_addr,
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uint16_t* data,
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uint32_t timeout);
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/** Perform I2C device memory read
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*
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* @param handle pointer to FuriHalI2cBusHandle instance
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* @param i2c_addr I2C slave address
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* @param mem_addr memory start address
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* @param data pointer to data buffer
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* @param len size of data buffer
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* @param timeout timeout in ticks
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*
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* @return true on successful transfer, false otherwise
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*/
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bool furi_hal_i2c_read_mem(
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FuriHalI2cBusHandle* handle,
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uint8_t i2c_addr,
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uint8_t mem_addr,
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uint8_t* data,
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uint8_t len,
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uint32_t timeout);
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/** Perform I2C device register write (8-bit)
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*
|
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* @param handle pointer to FuriHalI2cBusHandle instance
|
||||
* @param i2c_addr I2C slave address
|
||||
* @param reg_addr register address
|
||||
* @param data register value
|
||||
* @param timeout timeout in ticks
|
||||
*
|
||||
* @return true on successful transfer, false otherwise
|
||||
*/
|
||||
bool furi_hal_i2c_write_reg_8(
|
||||
FuriHalI2cBusHandle* handle,
|
||||
uint8_t i2c_addr,
|
||||
uint8_t reg_addr,
|
||||
uint8_t data,
|
||||
uint32_t timeout);
|
||||
|
||||
/** Perform I2C device register write (16-bit)
|
||||
*
|
||||
* @param handle pointer to FuriHalI2cBusHandle instance
|
||||
* @param i2c_addr I2C slave address
|
||||
* @param reg_addr register address
|
||||
* @param data register value
|
||||
* @param timeout timeout in ticks
|
||||
*
|
||||
* @return true on successful transfer, false otherwise
|
||||
*/
|
||||
bool furi_hal_i2c_write_reg_16(
|
||||
FuriHalI2cBusHandle* handle,
|
||||
uint8_t i2c_addr,
|
||||
uint8_t reg_addr,
|
||||
uint16_t data,
|
||||
uint32_t timeout);
|
||||
|
||||
/** Perform I2C device memory
|
||||
*
|
||||
* @param handle pointer to FuriHalI2cBusHandle instance
|
||||
* @param i2c_addr I2C slave address
|
||||
* @param mem_addr memory start address
|
||||
* @param data pointer to data buffer
|
||||
* @param len size of data buffer
|
||||
* @param timeout timeout in ticks
|
||||
*
|
||||
* @return true on successful transfer, false otherwise
|
||||
*/
|
||||
bool furi_hal_i2c_write_mem(
|
||||
FuriHalI2cBusHandle* handle,
|
||||
uint8_t i2c_addr,
|
||||
uint8_t mem_addr,
|
||||
uint8_t* data,
|
||||
uint8_t len,
|
||||
uint32_t timeout);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue
Block a user